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Table 3. Average block locate time from load point for 3592 Tape Cartridge in 3592 tape
drives
Type of 3592
Tape Cartridge
Average Block Locate Time from Load Point
1
Comments
2
TS1130 tape
drive
TS1120 tape
drive
3592 J1A Tape
Drive
EEFMT3 128 GB
[119.21 GiB])
Notes:
1.
For an encrypted format, an additional 5 seconds may be required to obtain a
encryption key to read the first block accessed on the cartridge.
2.
Encrypted format is referred to as EEFMT2 (for E05) and EEFMT3 (for E06).
By using the built-in data-compression capability of the tape drives, you can achieve greater
data rates than the native data transfer rate. However, the actual throughput is a function
of many components, such as the host system processor, disk data rate, block size, data
compression ratio, interconnect (for example, SCSI or Fibre Channel), and system or
application software.
For maximum performance with SCSI drives, multiple SCSI buses may be required and the
TS3500 Tape Library devices must be the only target devices that are active on each SCSI
bus.
Parent topic:
Library performance
This section explains how performance values, such as cartridge inventory times, mount
performance, and cartridge move time, are obtained for the TS3500 Tape Library.
Performance values for the TS3500 Tape Library, whether measured on test systems or
modeled through simulations, are based on a fixed set of workload assumptions to ensure
accurate comparisons; however, the results are not evaluated in all production
environments. Thus, the performance values show the relative performance of the systems
and may not be absolute indicators of performance in your specific environment.
Some of the specific assumptions may not pertain to a given operating environment. Actual
performance may vary. Accordingly, the performance information for this product does not
constitute a performance guarantee or warranty. Verify that the performance of the library
is acceptable in your specific environment.
The sections that follow describe the library's performance.