IBM System Storage TS2900, Руководство по установке, эксплуатации и обслуживанию

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1-8
TS2900 Tape Autoloader Setup, Operator, and Service Guide
Media
The TS2900 Tape Autoloader uses Ultrium Tape Cartridges that provide up to 800 GB
native capacity (up to 1600 GB with 2:1 hardware data compression) for Ultrium 4
tape drives, and up to 400 GB native capacity (up to 800 GB with 2:1 hardware
compression) for Ultrium 3 tape drives.
Note: The TS2900 Tape Autoloader supports the Ultrium 3 (3572-3SH) and Ultrium 4
(3572-4SH) Tape Drives only.
For more detailed information, see Chapter 5, “Media,” on page 5-1.
Logical Unit Number (LUN) Scanning
The TS2900 Tape Autoloader uses a single SCSI ID and dual LUNs to control the tape
drive (LUN 0) and library accessor (LUN 1). The library requires a Host Bus Adapter
(HBA) that supports LUN scanning. If it is not enabled, your host system will not
scan beyond LUN 0 and will fail to detect the library. It will only see the tape drive.
Important: Some HBAs, such as RAID controllers, do not support LUN scanning.
Location Coordinates and Element Addresses
The TS2900 Tape Autoloader incorporates IBM’s patented high-density (HD) slot
technology, which allows multiple cartridges to be stored in a tiered architecture. The
depth of a cartridge location in a high-density slot is known as a tier. High-density
slots are designed to contain multiple cartridges in Tiers 1 and 2.
Note: Each column has a spring-loaded mechanism that pushes a tape cartridge into
Tier 1 when it is the only cartridge in that column. A single cartridge in a
column takes on the Tier 2 element address even though it is physically
located in Tier 1.
Table 1-4. Ultrium data and cleaning cartridge compatibility with Ultrium tape drive
IBM Ultrium
Tape Drive
IBM LTO Ultrium Data Cartridges
800 GB
(Ultrium 4)
400 GB
(Ultrium 3)
200GB
(Ultrium 2)
100GB
(Ultrium 1)
Ultrium 4 Read/Write Read/Write Read only
Ultrium 3 Read/Write Read/Write Read only
Ultrium 2 Read/Write Read/Write
Ultrium 1 Read/Write