IBM TS4500 tape library
The IBM TS4500 tape library is a next-generation storage solution that is designed to help midsize and large enterprises respond to storage challenges. Some of these challenges include high data volume, growth in data centers, increasing cost of data center storage footprints, difficulty migrating data across vendor platforms, and increased complexity of IT training and management as staff resources shrink.
The TS4500 tape library combines reliable, automated tape handling and storage with reliable, high performance in an open systems environment. Incorporating IBM Linear Tape-Open (LTO) Ultrium tape and 3592 drives, the TS4500 tape library offers outstanding retrieval performance with typical cartridge move times of less than 3 seconds.
The TS4500, installed with the High Availability (HA) option, provides dual active accessors for redundancy, and can double the robot performance during tape move operations. The HA option on TS4500 has no dedicated service bays and provides the Elastic Capacity option for the use of the storage slots in these integrated service bays.
The TS4500 can be deployed as a single frame library and upgraded to a maximum of
18 frames, with a combination of either LTO and 3592 frames. This single frame library can be partitioned into multiple logical libraries. This feature makes the TS4500 tape library an excellent choice for consolidating tape workloads from multiple heterogeneous open systems servers.
The TS4500 protects investment by providing for redeployment of S24 and S54 frames from the TS3500 onto the TS4500.
The library provides outstanding reliability and redundancy through provision of redundant power supplies in each drive frame, control and data path failover, dual grippers within the cartridge accessor, and dual active accessors. Both library and drive firmware can be upgraded nondisruptively, without interrupting normal operations. Encryption is supported on the following tape drives:
•LTO Ultrium 8 tape drive (Model 3588 F8C)
•LTO Ultrium 7 tape drive (Model 3588 F7C)
•LTO Ultrium 6 tape drive (Model 3588 F6C)
•LTO Ultrium 5 tape drive (Model 3588 F5C)
•TS1160 tape drive (Model 3592 60E and 60F
•TS1155 tape drive (Model 3592 55E and 55F
•TS1150 tape drive (Model 3592 EH8)
•TS1140 tape drive (Model 3592 EH7)
Three encryption methods are supported:
•Application-managed encryption (AME)
•Library-managed encryption (LME)
•System-managed encryption (SME) for IBM z/OS TS7700 support
From TS4500 Release 2, the following functions were supported, over and above the first release of the TS4500:
•Automatic media verification
•Flexible remote authentication
•Primary control system failover
•Mixed media types within the same TS4500 library
•Scalability to 18 frames
•Up to 128 tape drives
•Simple Network Management Protocol (SNMP) query configuration
•Redeployment of S24 and S54 frames from TS3500 to TS4500
With TS4500 Release 3, the following new functions are now supported:
•High availability with dual active accessors
•Support for external TSSC/IMC
•Flexible growth options with new flex track design
TS4500 Release 4 added new functions, which include:
•TS1155 model 55E
•TS1155 model 55F
TS4500 Release 4.1 added new functions, which include:
•LTO Ultrium 8 tape drive (Model 3588 F8C)
TS4500 Release 5.0 added new functions, which include:
•TS1160 model 60E
•TS1160 model 60F
This chapter includes the following sections:
14.1 Overview of the IBM TS4500 tape library
The IBM TS4500 is a highly scalable, stand-alone tape library that provides high-density tape storage and high-performance, automated tape handling for open systems environments.
Figure 14-1 shows a three-frame version of the TS4500 tape library. An individual library can consist of one L frame and up to 17 expansion frames, and can include up to 128 tape drives and more than 23,000 tape cartridges, as shown in Figure 14-2 on page 423.
Figure 14-1 TS4500 introduction
The TS4500 tape library provides the following capabilities, which are described in more detail in the following sections:
•High availability dual active accessors with integrated service bays to reduce inactive service space by 40%. The Elastic Capacity option can be used to eliminate inactive service space.
•All of the frames include high-density (HD) slot technology.
•Additional HD2 frame models can be placed in any active position so that the library can grow from both the right side and the left side of the first L frame.
•HD generation 1 frames from the existing TS3500 library can be redeployed into a TS4500. These frames must be installed to the right of the Lx5 frame, and Feature Code (FC) 1742 must be installed on each frame before they can exist in a TS4500 library string.
•New Single Deep Cell technology.
•Integrated management console (IMC) with support for an external TSSC/IMC.
•New user interface for improved usability.
•Updated control system.
•Input/output (I/O) magazine to allow individual cartridge handling to be performed independently of the library.
•Top-rack space to house extra tape solution components within the library footprint.
•Support for HD2-compatible models of theTS1160 (3592 60E and 60F), TS1155 (3592 55E and 55F), TS1150 (3592 EH8), TS1140 (3592 EH7), LTO Ultrium 8 (3588 F8C), LTO Ultrium 7 (3588 F7C), LTO Ultrium 6 (3588 F6C), and LTO Ultrium 5 (3588 F5C) tape drives.
•Up to four Library-Managed Encryption (LME) key paths per logical library.
The TS4500 tape library is available with several tape drives, frame models, and feature options to meet your specific needs. Additional features of the TS4500 tape library are highlighted in the following list:
•Advanced Library Management System (ALMS)
•Ability to attach multiple simultaneous heterogeneous servers
•Remote management with the TS4500 management GUI or the TS4500 command-line interface (CLI)
•Remote monitoring by using SNMP, email, or syslog
•SNMP query configuration
•Media health verification
•Multipath architecture
•Drive and media exception reporting
•Host-based path failover
•Up to 288 I/O slots (36 I/O slots standard for LTO libraries and 32 I/O slots standard for 3592 libraries with extra I/O slots that are available as a feature add-on for all D25 and D55 frames)
•Up to four Encryption Key Manager (EKM) servers can be configured on each logical library
14.2 TS4500 product description
The IBM TS4500 tape library (Machine Type 3584) is a modular tape library that consists of a high-density base frame and up to 17 high-density expansion frames. The frames join side by side and can grow to the left or to the right of the base frame. All frames are supported by a single cartridge accessor. You can install a single-frame base library (Figure 14-1) and grow it to 18 frames, tailoring the library to match your system capacity requirements.
Table 14-1 lists the supported combinations of frames, tape drives, and their capabilities.
Table 14-1 TS4500 tape library capabilities
Models
Drives in frames
Maximum cartridges
Maximum native capacity
L25, D25, S25, and S24
3592 tape drives
17,550
351 PB
L55, D55, S55, and S54
LTO tape drives
23,170
278 PB
The maximum native capacity figures are based on library configurations with one base frame with all Ultrium 8 or TS1160 tape drives, and 17 storage-only HD frames.
Figure 14-2 shows the TS4500 maximum configuration with 18 frames.
Figure 14-2 Maximum TS4500 tape library configuration
There are eight types of frames that are supported in the current TS4500 tape library range. Each frame is identified by a three-character model number (L25, D25, L55, D55, S25, S55, S24, and S54), which describes the nature of the frame.
The TS4500 tape library is built from a single frame model that is called the base frame. The scalability of the library allows an increase in capacity by adding up to 17 additional frames, called expansion frames. The frames join side by side and can grow to the left or to the right of the base frame. All frames can be supported by either a single cartridge accessor, or by dual active accessors with the high availability feature. The TS4500 tape library can contain a mix of 3592 and LTO frames.
The TS4500 tape library supports first generation (S54, S24) frames (HD1), and second-generation high-density (HD2) frames. HD2 frames like the first-generation HD1 frames, offer increased capacity without increasing frame size or required floor space by using high-density storage slots for tape cartridges. In addition, HD2 frames provide the following enhancements:
•HD2 frames can be installed in the left-most position of the library (frame number 1).
•Drive-capable HD2 frames support up to 16 HD2-compatible tape drives (3588 F7C, 3588 F6C, 3588 F5C, 3592 60E, 3592 60F, 3592 55E, 3592 55F, 3592 EH8, and 3592 EH7) when positioned as frame number 2 or higher.
Generation 1 HD frames from TS3500 (Model S24 and S54) can be redeployed into a TS4500. These HD1 frames must be installed to the right of the Lx5 frame. These S24 or S54 (SX4) frames must have FC 1742 applied to them before they can exist in a TS4500 library string.
 
Note: The HD1 models S24 and S54 cannot be installed to the left of the Lx5 frame and cannot be installed as the right-most frame in a dual accessor tape library.
The L25 and L55 (Lx5) frames and D25 and D55 (Dx5) frames are HD2, drive-capable frames, which means that they contain high-density cartridge storage slots, and slots to house up to 16 tape drives. The S25, S55 (Sx5) HD2 frames, and S54, S24 (SX4) HD1 frames, are storage-only frames, which means that they contain high-density cartridge storage slots, but no tape drives. All HD frames provide internal light-emitting diode (LED) lighting.
The TS4500 also supports the addition of a top rack frame. The top rack, 3584 Model TR1, provides an extra 10U of rack space on any frame in a library without requiring more floor space.
Table 14-2 lists the frames that are supported by the library and their specific media type and capacity.
Table 14-2 TS4500 tape library frame models
Frame model
Type
Media type
Capacity
Other
Frame position 1
Frame position 2+
L25
Base frame
3592
Up to 12 tape drives and 550 storage slots
Up to 16 tape drives and 660 storage slots
•Equipped with two I/O stations and two 16-slot magazines
•Optionally equipped with top rack (Model TR1)
L55
Base frame
LTO
Up to 12 tape drives and 730 storage slots
Up to 16 tape drives and 882 storage slots
•Equipped with two I/O stations and two 18-slot magazines
•Optionally equipped with top rack (Model TR1)
D25
Expansion frame
3592
Up to 12 tape drives and 590 storage slots
Up to 16 tape drives and 740 storage slots
•Equipped with two I/O stations and two 16-slot magazines
•Optionally equipped with top rack (Model TR1)
D55
Expansion frame
LTO
Up to 12 tape drives and 774 storage slots
Up to 16 tape drives and 970 storage slots
•Equipped with two I/O stations and two 18-slot magazines
•Optionally equipped with top rack (Model TR1)
S25
Storage-only expansion frame
3592
798 storage slots
1000 storage slots
•Optionally equipped with top rack (Model TR1)
S55
Storage-only expansion frame
LTO
1054 storage slots
1320 storage slots
•Optionally equipped with top rack (Model TR1)
S24
Storage-only expansion frame
3592
Not supported
1000 storage slots
•Optionally equipped with top rack (Model TR1)
S54
Storage-only expansion frame
LTO
Not supported
1320 storage slots
•Optionally equipped with top rack (Model TR1)
14.2.1 TS4500 tape library frames for IBM LTO Ultrium Fibre Channel drives
The TS4500 tape library models L55 and D55 integrate the HD2 versions of the LTO-8, LTO-7, LTO-6, and LTO-5 (8 Gbps dual-port Fibre Channel) tape drives. The TS4500 Model S55 is a high capacity storage-only frame for LTO cartridge slots.
The Model L55 frame includes the frame control assembly with two power supplies (for redundancy), an optimized dual-gripper cartridge accessor, on-demand storage slot capacity, and with two I/O stations with two 18-slot magazines.
TS4500 tape library Model L55
The L55 frame can be installed on its own as a complete library enclosure, as shown in Figure 14-3 on page 426, or it can have up to 17 expansion frames that are attached to it. This frame provides the major library components for the whole library, whether it has a single frame or multiple frames. It also provides cartridge storage capacity for LTO media and can be equipped with the HD2 versions of the LTO-8, LTO-7, LTO-6, and LTO-5 dual-ported drives that facilitate 8 Gbps Fibre Channel connectivity.
HD2 expansion frames can be added to either the left or right of the L55 frame. HD1 frames can be added only to the right side of L55 frame. See Figure 14-3.
Figure 14-3 TS4500 tape library L55/L25 base frame
The number of LTO cartridge storage slots ranges 100 - 882. With the minimum configuration, 100 slots are available for use. The maximum of 882 slots is already physically installed.
More slots can be added by enabling them through a capacity on demand (CoD) license key.
There are a number of CoD feature codes for the L55 frame and the number of slots available depends on the frame position.
The Intermediate Capacity feature (Feature Code (FC) 1643) gives a maximum number of usable cartridge slots of 200. This feature is a prerequisite for the Base Capacity on Demand (FC 1644), which gives the maximum capacity of 400 cartridge slots. FC 1644 is required to attach an optional expansion frame. Both FC 1643 and 1644 are prerequisites to install the HD CoD for L55 (FC 1648). This configuration gives the maximum capacity of 730 - 882 slots.
Depending on the frame position, the maximum number of LTO drives that can be installed is 16. There are four generations of HD2-compatible LTO drives: The LTO Ultrium 8 tape drive (Model 3588 F8C), LTO Ultrium 7 tape drive (Model 3588 F7C), LTO Ultrium 6 tape drive (Model 3588 F6C), and the LTO Ultrium 5 tape drive (Model 3588 F5C), which can be installed in the L55 frame. Drive slots are fixed. Adding drives to the L55 frame does not affect the number of available storage slots.
Drive slots and HD slots are shown in Figure 14-4.
Figure 14-4 L55/L25 frame internal
When CoD features are installed, the position and configuration of the frame affect the total available capacity of the L55. Table 14-3 shows the available storage capacity based on possible frame positions and configurations.
Table 14-3 Quantity of storage slots in an L55 frame
Licensed features
Frame position
Quantity of drives
Quantity of I/O slots
Quantity of storage slots
Entry
1
1 - 12
36
100
Intermediate
1
1 - 12
36
200
Base
1
0 - 12
36
400
Base
2+
0 - 16
36
400
HD CoD
1
0 - 12
36
730
HD CoD
2+
0 - 16
36
882
The L55 frame comes standard with two I/O stations. Each I/O station houses a cartridge magazine that allows individual cartridge handling to be done independently of the tape library. The cartridge magazine for each I/O station on LTO frames can hold up to 18 cartridges, providing a total of 36 I/O slots. The TS4500 tape library Model L55 imports or exports cartridges from the library, without requiring reinventory, or interruption of library operations.
The lockable library door can be opened for bulk-loading LTO tape cartridges. Reinventory of the cartridges in Tier 0 and Tier 1 is done in fewer than 60 seconds per frame, each time that the library door is closed. A bar code reader that is mounted on the autochanger is used to scan the cartridge bar code labels during inventory.
On an HD frame, the inventory checks only Tier 1 bar code labels, and checks the other tier labels only if Tier 1 changed.
A door lock is included to restrict physical access to cartridges in the library and a door open sensor is equipped to prevent accessor movement while the door is open.
 
Note: The left and right side doors also contain the door lock and open sensor.
Included in the L55 frame is the integrated management console (IMC), which is a built-in platform for tools that are used to manage the TS4500 tape library. The IMC, which includes an LCD panel and a keyboard with touchpad, can be mounted on either end of your TS4500 tape library.
A library controller card (LCC) and power source are required within that end frame or within the adjacent frame. Alternatively, feature code 2737, IMC Separate Power Source, can source the IMC power independently and to an LCC anywhere in the library.
TS4500 tape library Model D55
The D55 frame, as shown in Figure 14-5 on page 429, has the same footprint as the model L55.
The D55 frame cannot be installed on its own. It must be connected to a library with a base frame. A maximum of 18 frames, including the L55 frame, can be connected, as shown in Figure 14-2 on page 423.
 
Note: The combined number of D55 or D25 drive frames that are allowed in a TS4500 library is limited to seven.
The number of additional LTO cartridge storage slots per D55 frame is 500 - 970. With the minimum configuration, only 500 slots are available for use. More slots can be enabled by installing a CoD license key.
The base capacity on a D55 frame gives the maximum capacity of 500 cartridge slots. FC 1644 must be installed on the L55 frame, along with either FC 9002, or FC 9003, and the corresponding prerequisite FC, to attach a D55 expansion frame. The HD CoD for D55
(FC 1650) gives the maximum capacity of 730 - 970 slots, depending on the frame position.
Depending on the frame position, the maximum number of LTO drives that can be installed is 16. As with the L55 frame, three generations of HD2-compatible LTO drives, which are the LTO Ultrium 8 tape drive (Model 3588 F8C), LTO Ultrium 7 tape drive (Model 3588 F7C), LTO Ultrium 6 tape drive (Model 3588 F6C), and the LTO Ultrium 5 tape drive (Model 3588 F5C), can be installed in the D55 frame.
Drive slots are fixed. Adding drives to the D55 frame does not affect the number of storage slots that are available.
Two extra I/O stations can be installed in any Dx5 expansion frame by ordering FC 1652. This feature installs two I/O stations in one expansion frame. Each additional pair of I/O stations increases the maximum insert/eject throughput for the library. The maximum cartridge capacity for expansion frames with two I/O stations is reduced by 44 cartridges for the model D55.
Drive slots and HD slots are shown in Figure 14-5.
Figure 14-5 TS4500 model D55/L55
The position and configuration of the frame, number of I/O slots, and the installation of CoD features all affect the total available storage capacity of the D55.
Table 14-4 lists the available storage capacity based on possible frame positions and configurations.
Table 14-4 Quantity of storage slots in the D55 frame
Licensed features
Frame position
Quantity of drives
Quantity of I/O slots
Quantity of storage slots
Base
1
0 - 12
0 - 36
500
Base
2+
0 - 16
0 - 36
500
HD CoD
1
0 - 12
36
730
HD CoD
1
0 - 16
0
774
HD CoD
2+
0 - 16
36
882
HD CoD
2+
0 - 16
0
970
14.2.2 TS4500 tape library frames for IBM 3592 Fibre Channel drives
The TS4500 tape library models L25 and D25 integrate the TS1160, TS1155, TS1150, and TS1140 tape drives. The TS4500 Model S25 is a high-capacity storage-only frame for 3592 slots.
The Model L25 frame includes the Frame Control Assembly with two power supplies (for redundancy), an optimized dual-gripper cartridge accessor, on-demand storage slot capacity, and with two I/O stations with two 16-slot magazines.
TS4500 tape library Model L25
The L25 can be installed on its own as a complete library enclosure, as shown in Figure 14-3 on page 426, or it can have up to 17 expansion frames that are attached to it. This frame provides the major library components for the whole library, whether it has a single or multiple frames. It also provides cartridge storage capacity for 3592 media and can be equipped with TS1160 (3592 model 60F and 60E) dual-ported drives provide 16 Gbps Fibre Channel connectivity.
TS1155, TS1150, and TS1140 (3592 model 55F, EH8, and EH7) dual-ported drives provide 8 Gbps Fibre Channel connectivity. The TS1160 (3592-60E) dual-ported drives provide 10 Gbps or 25Gbps Ethernet connectivity. The TS1155 (3592-55E) dual-ported drives provide 10 Gbps Ethernet connectivity.
HD2 expansion frames can be added to either the left or right of the L25 frame. HD1 frames can be added only to the right side of the L25 frame.
The Intermediate Capacity feature (FC 1643) gives a maximum total number of usable cartridge slots of 200. This feature is a prerequisite for the Base Capacity on Demand
(FC 1644), which gives the maximum capacity of 400 cartridge slots. FC 1644 is required to attach an optional expansion frame. FC 1644 is a prerequisite to install the HD CoD for L25 (FC 1647), which offers the maximum capacity of 550 - 660 slots.
Depending on the frame position, the maximum number of 3592 drives that can be installed is 16. Two generations of HD2-compatible 3592 drives, the TS1160 (3592 60E and 60F), TS1155 (3592 55E and 55F), TS1150 (3592 E08), and TS1140 (3592 E07) tape drives, are supported in the L25 frame. Drive slots are fixed. Adding drives to the L25 frame does not affect on the number of storage slots available.
Drive slots and HD slots are shown in Figure 14-6.
Figure 14-6 TS4500 model D25/L25
The position and configuration of the frame and the installation of CoD features affect the total available capacity of the L25. Table 14-5 shows available storage capacity based on possible frame positions and configurations.
Table 14-5 Quantity of storage slots in L25 frame
Licensed features
Frame position
Quantity of drives
Quantity of I/O slots
Quantity of storage slots
Entry
1
1 - 12
32
100
Intermediate
1
1 - 12
32
200
Base
1
0 - 12
32
400
Base
2+
0 - 16
32
400
HD CoD
1
0 - 12
32
550
HD CoD
2+
0 - 16
32
660
The L25 frame comes standard with two I/O stations. Each I/O station houses a cartridge magazine that allows importing or exporting cartridges from the library without requiring reinventory or interruption of library operations. The cartridge magazine for each I/O station on 3592 frames can hold up to 16 cartridges, providing a total of 32 I/O slots.
The lockable library door can be opened for bulk-loading IBM LTO Ultrium tape cartridges. Reinventory of the cartridges in Tier 0 and Tier 1 is done in fewer than 60 seconds per frame, each time that the library door is closed. A bar code reader that is mounted on the autochanger is used to scan the cartridge bar code labels during inventory.
 
Note: If a bulk load is performed, the top two rows on tier 1 must remain empty to allow for the initial inventory.
On an HD frame, the inventory checks only Tier 1 bar code labels, and checks the other Tier labels only if Tier 1 changed.
A door lock is included to restrict physical access to cartridges in the library and a door open sensor is equipped to prevent accessor movement while the door is open.
Included in the L25 frame is the IMC, which is a built-in platform for tools that are used to manage the TS4500 tape library. The IMC, which includes an LCD panel and a keyboard with touch pad, can be mounted on either end of your TS4500 tape library.
An LCC and power source are required within that end frame or within the adjacent frame. Alternatively, feature code 2737, IMC Separate Power Source, can source the IMC power independently and to an LCC anywhere in the library.
TS4500 tape library Model D25
The D25 frame, as shown in Figure 14-5 on page 429, has the same footprint as the Model L25. The D25 frame cannot be installed on its own. It must be connected to a library with a base frame and optional expansion frames. A maximum of 18 frames, including the L25 frame, can be connected, as shown in Figure 14-2 on page 423.
 
Note: The combined number of D55 or D25 frames that are allowed in a TS4500 library is limited to seven.
The number of additional 3592 cartridge storage slots per D25 frame ranges from 500 - 740. With the minimum configuration, only 500 slots are available for use.
More slots can be enabled by installing a CoD license key.
The base capacity on a D25 frame gives the maximum capacity of 500 cartridge slots.
FC 1644 must be installed on the L55 frame with either FC 9002 or 9003 and the corresponding prerequisite FC to attach a D25 expansion frame.
The HD CoD for D25 (FC 1649) gives the maximum capacity of 660 - 740 slots, depending on frame position.
Depending on the frame position, the maximum number of 3592 drives that can be installed is 16. Two generations of HD2-compatible 3592 drives, the TS1160 (3592 60E and 60F), TS1155 (3592 55E and 55F), TS1150 (3592 E08), and TS1140 (3592 E07) tape drives are supported in the D25 frame. Drive slots are fixed. Adding drives to the D25 frame does not affect on the number of storage slots available.
Drive slots and HD slots are shown in Figure 14-6 on page 431. Two extra I/O stations can be installed in any Dx5 expansion frame by ordering FC 1652. This feature installs two I/O stations in one expansion frame. Each additional pair of I/O stations increases the maximum insert/eject throughput for the library. The maximum cartridge capacity for expansion frames with two I/O stations is reduced by 80 cartridges for the Model D25 frame.
The position and configuration of the frame, number of I/O slots, and the installation of CoD features all affect the total available storage capacity of the D55. Table 14-6 shows available storage capacity based on possible frame positions and configurations.
Table 14-6 Quantity of storage slots in D25 frame
Licensed features
Frame position
Quantity of drives
Quantity of I/O slots
Quantity of storage slots
Base
1
0 - 12
0 or 32
500
Base
2+
0 - 16
0 or 32
500
HD CoD
1
0 - 12
32
550
HD CoD
1
0 - 12
0
590
HD CoD
2+
0 - 16
32
660
HD CoD
2+
0 - 16
0
740
14.2.3 TS4500 tape library storage-only HD frames
This section describes TS4500 tape library storage-only HD frame models.
Model S55 and S25
IBM TS4500 includes the Model S25 frame and the Model S55 frame, which are high density (HD) version 2 storage-only expansion frames, which are shown in Figure 14-7.
These frames are designed to greatly increase storage capacity without increasing frame size or required floor space.
Figure 14-7 SX5/SX4 frame
HD slots contain tape cartridges in a tiered architecture. The cartridge immediately accessible in the HD slot is a Tier 1 cartridge. Behind that is Tier 2, and so on. The maximum tier in an LTO HD slot is Tier 5. The maximum tier in a 3592 HD slot is Tier 4 because the 3592 tape cartridge is slightly longer than the LTO cartridge. The single-deep slots on the door side of HD frames are referred to as Tier 0 slots.
On the left, Figure 14-8 shows the inside of an HD frame from the side. On the right, Figure 14-8 shows a top-down view of one row of an HD frame with cartridges in tiers 0 (door side), 1, 2, and 3.
Figure 14-8 The HD frame (left) and top-down view of a row in an HD frame (right)
Model S24 and S54
The IBM TS3500 storage-only frame HD1 Model, S24 and S54, can be attached to the TS4500.
These generation 1 HD frames can be redeployed into a TS4500 if they are installed to the right of the Lx5 frame. They must have FC 1742 installed before they can be added to a TS4500 library string. This feature code replaced the TS3500 cards to be supported on TS4500, shown in Figure 14-9.
Figure 14-9 Changes to S24/S54 for TS4500 attach
The TS3500 tape library Model S24 and S54 frames are HD version 1 storage only expansion frames, which were attached to existing TS3500 tape libraries and frames.
The model S24 expansion frame is for 3592 data cartridges. Up to 17 Model S24 expansion frames can be added to the right of the Lx5 frame, the TS4500 Model L25 base frame to increase 3592 cartridge storage. Each Model S24 frame supports up to 1000 IBM 3592 cartridge slots.
The model S54 expansion frame is for LTO data cartridges. Up to 17 Model S54 expansion frames can be added to the right of the Lx5 frame, the TS4500 tape library Model L55 base frame, to increase LTO cartridge storage. Each Model S54 Frame supports up to 1320 LTO cartridge slots.
The HD1 model S24 and S54 can be added to any TS4500 expansion frame, if it is right of the LX5 frame and to a total of 18 expansion frames, including the LX5 frame.
HD1 and HD2 frames
All HD slots are black; however, the location of the cartridge retention latch differentiates LTO HD slots from 3592 HD slots. The cartridge retention latch is on the left side of LTO HD slots and on the right side of 3592 HD slots, as shown in Figure 14-10.
Figure 14-10 HD slot
 
Attention: The HD slots have a constant force spring for maintaining forward pressure on the tape cartridges. Use caution when inserting or removing cartridges from HD slots.
In an HD library, a standard inventory is a scan of Tier 0 and Tier 1; however, at times, it is necessary to inventory all tiers. This operation takes more time because it requires moving the cartridges within an HD slot to scan each bar code. For all inventory operations, Tier 2 and higher tiers in an HD slot are only scanned when one of the following changes occurs:
•A Tier 1 cartridge bar code label changed
•Enough Tier 1 bar code labels changed in a column to warrant an inventory of the entire column of HD slots
•Inventory of all tiers is selected when initiating a manual inventory from the TS4500 management GUI
In HD frames, the cartridge accessor performs a shuffle operation to access the cartridges that are stored in Tier 2 and beyond. A shuffle is the process of moving cartridges in lower tiers into the gripper, or other available slots, to access cartridges in higher tiers (Tier 2 or greater). To reduce shuffle operations and take advantage of repeated accesses of certain cartridges, the role of cartridge cache is assigned to all single-deep (Tier 0) slots in an HD library.
To maintain efficient shuffle operations, the library uses load balancing to store cartridges across all HD slots in the library string. Therefore, all HD slots are filled to a minimum tier level until that tier is full across the library.
For the initial bulk load on a newly installed frame, insert cartridges into the deep slots, but leave the top two rows empty. The slots in the top two rows must be empty for the initial audit of the frame to start. The initial audit fills these slots and then they are used like any other HD slot in subsequent library operations.
First-generation HD (HD1) can be installed only to the right of an LX5 frame.
Second-generation HD (HD2) frames provide the following enhancements:
•Can be installed in the left-most library position (frame position 1)
•Offer drive-capable models that support up to 16 HD2-compatible tape drives when in frame position 2 or higher
The position and configuration of the frame, and the installation of CoD features, all affect the total available storage capacity of the S25 and S55 frames. Table 14-7 shows available storage capacity based on possible frame positions and configurations.
Table 14-7 Quantity of storage slots in S25/S55 frames
Model
Licensed features
Frame position
Quantity of storage slots
S25
S25 Base
Any
600
S55
S55 Base
Any
660
S25
S25 HD CoD
1
798
S55
S55 HD CoD
1
1,054
S25
S25 HD CoD
2+
1,000
S55
S55 HD CoD
2+
1,320
S24
S24 HD CoD
2+
1,000
S54
S54 HD CoD
2+
1,320
14.2.4 TS4500 High Availability (HA) option
The TS4500 High Availability (HA) option provides a second accessor for redundancy and performance. This feature allows for dual accessors in a dual-active mode and has an integrated service bay to reduce service space.
The TS4500 HA option and Integrated Service Bays replace the HA1 frame and Service Bay B frames that are used on the TS3500. The Integrated Service Bay allows a section of a frame to be used for servicing an accessor while the remaining portion of the frame is still available for active storage and drives. Accessor service must be performed through the side opening doors of Integrated Service Bays. Any HD2 frame can be an Integrated Service Bay.
The second accessor, accessor B, is provided when you order a new DX5 or SX5 frame with FC 1442. The new DX5 or SX5 frame can be installed in any position and is shipped with the new B assessor. The accessor can be removed from the new frame and installed on the right side of the TS4500 if the new frame is installed on the left side.
Figure 14-11 shows the HA feature that is shipped in a new D25 frame.
Figure 14-11 D25 frame that is ordered with FC 1442
The left or A side Integrated Service Bay allows cartridges to be populated in storage columns 9 and 10, and drives can be populated in drive column 4.
The right or B side Integrated Service Bay allows cartridges to be populated in storage columns, 1, 2, 3, and 4, and drives can be populated in drive columns 1 and 2. The I/O stations are accessible in the right Integrated Service Bay. Integrated Service Bays allow for a minimum dual accessor system to be only two frames.
The available storage for HA is shown in Figure 14-12.
Figure 14-12 Available storage with the HA option
 
Note: I/O stations are not accessible in the left Integrated Service Bay, so a L25 or L55 frame cannot be used as a left integrated Service Bay. The frame that is shipped with the HA option can be installed on the left side if required, as there are no dedicated service bays and the new accessor can be installed in the right side frame.
Elastic capacity
The TS4500 provides the Elastic Capacity option to eliminate inactive service space and can provide temporary relief for temporary overflow conditions. These slots are referred to as Tier 10 - 15 slots, and standard storage slots are Tier 0 - 5.
With dual active accessors, some storage slots are available only to a single accessor and are unavailable during accessor service. The ability to use these slots is optional and can be enabled or disabled on the management interface.
Here are the Elastic Capacity options:
•Do not use
•Use for temporary overflow
•Use for maximum capacity
Do not use
In this mode, the TS4500 does not use the Elastic Capacity slots for media storage, so all media is usable when only one accessor is available. Tier T10 - 15 slots are not used.
Use for temporary overflow
In this mode, the only time cartridges are moved to elastic storage is when the library is 100% full and new inserts have no other destination choice. In this case, T10 - T15 is used as temporary storage to handle the library overfill. Cartridges are returned to HA space after space becomes available either manually by a user or when the application mounts and unmounts the cartridges in the Elastic Capacity slots (T10 - T15).
Use for maximum capacity
Use this setting to store media cartridges in the limited access (Elastic Capacity) columns as normal storage. The use of these slots can be managed by using different methods:
•Manually: A user can select a cartridge to destage to elastic storage through the CLI. If the cartridge is already in elastic storage, no action is taken.
•SCSI: An application can use the HD Control field of the SCSI Move Medium command to specify that the move is an elastic storage destage.
•Periodic: When the dual-access area (the cartridge slots that both A and B accessors can reach) exceeds the usage threshold, the least recently used cartridges are moved into the Elastic Capacity area. The default usage threshold is 98%.
TS4500 capacity tool
The IBM Tape Library Slot Calculator helps calculate capacity and slot numbers for all IBM Tape Libraries, including TS3100, TS3200, TS3310, TS3500, and the TS4500, including TS4500 capacity with the different Elastic Capacity options.
This tool can be obtained from the following website:
14.2.5 External TSSC
The TS4500 R3 supports an external TSSC, which can be configured so that a single TSSC provides the call home capability for a number of TS7700, TS4500, or TS3500 devices on the same site, as shown in Figure 14-13.
Figure 14-13 External TSSC server
14.2.6 TS4500 tape library top rack frame TR1
The top rack, 3584 Model TR1, provides an extra 10U of rack space on any frame in a library without requiring more floor space.
The optional top rack, shown in Figure 14-14, reduces the storage footprint and simplifies cabling by providing extra rack space above the library for power distribution units, Fibre Channel switches, tape data movers, or IBM Spectrum Archive nodes.
Figure 14-14 Tape library with top rack installed
A top rack is installed in the field by an IBM service representative on one or more frames of a TS4500 tape library. The top rack, and any components that are housed in the rack, are supported and serviced independently of the TS4500 tape library.
Feature code 1750, top rack end covers, is required for the left and right ends of one or more adjacent top racks. This feature is only required for the first top rack that is ordered when multiple top racks are ordered for adjacent frames.
Feature code 1751, power distribution unit (PDU), can optionally be ordered for any top rack. Up to two of FC 1751 can be ordered for any top rack. The first PDU does not use any of the 10U rack space. A second PDU, for redundancy, uses 1U of rack space. One power cord feature, FC 9954 through FC 9959 or FC 9966, is required for each PDU that is ordered.
Figure 14-15 shows the top rack without covers and devices installed.
Figure 14-15 Top rack without covers
 
Note: The top rack is treated as an independent rack space and it is not tied to the service or support of the tape library.
For more information about the TS4500, see the IBM TS4500 website:
For more information about the TS4500, see IBM TS4500 R5 Tape Library Guide, SG24-8235.
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