Drive Performance; Cartridge Compatibility; Performance Rates And Times; Ultrium Cartridge Compatibility With Ultrium - IBM L5X Installation And User Manual

Drive performance

Details about the drive tape-processing speed are shown in the following table.
Table 2. Performance rates and times
Native data rate
Maximum sustained data rate (at maximum compression)
Burst data rate
Nominal load-to-ready time
Nominal unload time
Average rewind time
Note: All sustained data rates are dependent on the capabilities of the interconnect, and application software
performance might be slower than the published performance ratings.
By using the built-in data-compression capability of the tape drive, a faster data
rate than the native data transfer rate can be achieved. However, the actual
performance of the drive is a function of many components, such as the host
system processor, disk data rate, block size, data compression ratio, SAS bus
capabilities, and system or application software.

Cartridge compatibility

The tape drive uses the IBM
compatible with the cartridges of its predecessor, the IBM Half-High LTO Ultrium
4 Tape Drive. The drive has the following capabilities and limitations:
Note: To improve system performance, the drive uses a feature called speed
Table 3. Ultrium cartridge compatibility with Ultrium tape drives
IBM Ultrium Tape
Drive
Ultrium 5
Ultrium 4
Ultrium 3
Ultrium 2
Ultrium 1
The drive reads tapes that have been written by other licensed Ultrium 5 drives. It
also writes to tapes that can be read by other licensed Ultrium 5 drives.
In addition to using the IBM LTO Ultrium Data Cartridge with up to 1500 GB
capacity, the drive also has read and write capabilities with certified LTO Ultrium
tape cartridges.
4
Half-High LTO Gen 5 SAS Tape Drive Installation and User's Guide
matching to dynamically adjust its native (uncompressed) data rate to the
slower data rate of a server. For more information about speed matching,
see "Speed matching" on page 5.
1500 GB 800 GB
(Ultrium 5) (Ultrium 4)
Read/Write Read/Write
Read/Write
140 MB/second (with Ultrium 5 media)
®
LTO Ultrium 1,500 GB Data Cartridge and is
IBM LTO Ultrium Data Cartridges
400 GB
(Ultrium 3)
Read only
Read/Write
Read/Write
550 MB/second
600 MB/second
12 seconds
17 seconds
75 seconds
200 GB 100 GB
(Ultrium 2) (Ultrium 1)
Read only
Read/Write Read only
Read/Write Read/Write
Read/Write