Drive performance – StorageTek 9840 User Manual
Page 222
Drive Performance
A-6
Sixth Edition
95741
■
Drive Performance
shows performance characteristics of the 9840 Tape Drive.
Table A-6. Drive Performance
Characteristics
Values
Maximum block size
256 kB
Data rate, head-to-tape
10 MB/s (see note)
Data rate of host interface
Fibre Channel: burst transmission speed of
100 MB/s (256 kB)
Ultra SCSI: 40 MB/s burst synchronous/
ULTRA-1, differential, wide/fast, negotiable
down to SCSI-1 narrow differential (see note)
Maximum rewind time:
from end of any wrap to
logical beginning of tape
(BOT)
16 s
Reposition time
No penalty
Tape load and initialize to
ready
4 s
Unload time
5 s excluding rewind
Access time (does not
include library timing)
8 s for first search
11 s average for subsequent search
Data buffer size
8 MB
Read/write speed
2m/s (79 ips)
Search/rewind speed
8 m/s (315 ips)
Note: Individual results may vary depending on the characteristics of the
data and other variables.