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Drive Information And Performance Specification For Half-Height Drives - IBM TS4300 User Manual

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Table 6. Drive information and performance specification for full-height drives (continued)
Generation
1
By using the built-in data-compression capability of the tape drive, greater data rates than the native
data transfer rate are achieved. However, the actual throughput 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.
2
Cartridge initialization time can vary. See "Media optimization" on page 17 for more information.
3
See "Archive mode unthread" on page 18 for more information.
Remember:
• All sustained data rates depend on the capabilities of the interconnect.
• Drive performance varies with media generation and drive interface (SAS/FC).
Table 7. Drive information and performance specification for half-height drives
Generation
Inquiry
Interface (speed)
Native data rate
Sustained data
rate (L6,
L7, L8 and
L9 compressed
at 2.5:1
compression; L5
and earlier
compressed at
2:1compression)
Burst data rate
Nominal load-to-
ready time
-Initialized tape
-Uninitialized tape
Nominal unload
time
Average space
record time from
load point
12  IBM TS4300 Tape Library Machine Type 3555: User's Guide
LTO 9
LTO 8
LTO 9
LTO 8
ULT3580-HH9
ULT3580-HH8
ULTRIUM-HH9
ULTRIUM-HH8
FC (8 Gbps)
FC (8 Gbps)
SAS (12 Gbps)
SAS (6 Gbps)
300 MB/s (L9)
300 MB/s (L8)
300 MB/s (L8)
300 MB/s (M8)
300 MB/s (L7)
FC
FC
700 Mb/s (L9)
700 Mb/s (L8)
700 Mb/s (L8)
700 Mb/s (M8)
700 Mb/s (L7)
SAS
720 MB/s (L9)
SAS
720 MB/s (L8)
600 MB/s (L8)
540 MB/s (M8)
500 MB/s (L7)
800 MB/s FC
800 MB/s FC
1200 MB/s SAS
600 MB/s SAS
16 seconds
15 seconds
16 seconds
NA
2
40-132 minutes
NA
56 seconds
24 seconds
65 seconds
59 seconds
IBM Confidential
LTO 7
LTO 6
LTO 7
LTO 6
ULT3580-HH7
ULT3580-HH6
ULTRIUM-HH7
ULTRIUM-HH6
FC (8 Gbps)
FC (8 Gbps)
SAS (6 Gbps)
SAS (6 Gbps)
300 MB/s (L7)
160 MB/s (L6)
160 MB/s (L6)
140 MB/s (L5)
140 MB/s (L5)
120 MB/s (L4)
FC
FC and SAS
700 Mb/s (L7)
400 MB/s (L6)
400 Mb/s (L6)
280 MB/s (L5)
280 Mb/s (L5)
240 MB/s (L4)
SAS
500 MB/s (L7)
400 MB/s (L6)
280 MB/s (L5)
800 MB/s FC
800 MB/s FC
600 MB/s SAS
600 MB/s SAS
15 seconds
12 seconds
NA
NA
NA
NA
20 seconds
17 seconds
56 seconds
62 seconds

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