Sun Microsystems StorageTek T9840, Руководство пользователя

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Performance Specifications
92 T9840 User’s Reference Manual • September 2008 Revision YA • 95739
Performance Specifications
This section describes the T9840 Tape Drive and Tape Cartridge performance.
Tape Drive
TABLE A-8
lists the performance specifications of the T9840 tape drive.
TABLE A-8
T9840 Tape Drive Performance Specifications
Characteristic
Value
T9840A T9840B T9840C T9840D
Capacity and Performance
Capacity, native
Data buffer size
tape speed, read/write
Performance, native (head-to-tape
uncompressed
compressed (maximum)
Burst (FC & FICON)
Burst (ESCON)
20 GB
8 MB
2 m/s
10 MB/s
35 MB/s
100 MB/s
17 MB/s
20 GB
32 MB
4 m/s
19 MB/s
60 MB/s
200 MB/s
17 MB/s
40 GB
1
64 MB
3.295 m/s
30 MB/s
60 MB/s
200 MB/s
17 MB/s
75 GB
1
64 MB
3.4 m/s
30 MB/s
60 MB/s
2
200 MB/s
17 MB/s
Interface data
Fibre Channel
Ultra SCSI (HVD)
ESCON
FICON 1 Gb
40 MB/s
17 MB/s
N/A 2 Gb
40 MB/s
17 MB/s
2 Gb 2 Gb
N/A
17 MB/s
2 Gb 2 Gb
N/A
17 MB/s
2 Gb
Access times
Tape load and thread to ready
File access, first (average)
Rewind (maximum/average)
Unload 7 sec
8 sec
16/8 sec
8 sec 7 sec
8 sec
16/8 sec
8 sec 6.5 sec
8 sec
16/8 sec
11.5 sec 8.5 sec
8 sec
16/8 sec
12.5 sec
Reliability
Mean time between failure (MTBF)
Power on @ 100% duty cycle
Tape load @ 10/day (100k loads)
Tape path motion (TPM) @ 70%
duty cycle
Head life @ 70% TPM duty cycle
Uncorrected bit error rate
Undetected bit error rate
290,000 hr
240,000 hr
216,000 hr
5 years
1 x 10
-18
1 x 10
-33
290,000 hr
240,000 hr
216,000 hr
5 years
1 x 10
-18
1 x 10
-33
290,000 hr
240,000 hr
216,000 hr
5 years
1 x 10
-18
1 x 10
-33
290,000 hr
240,000 hr
216,000 hr
5 years
1 x 10
-18
1 x 10
-33
1. VR
2
is a trademark of Overland Storage.
VR
2
technology is used to achieve T9840C and T9840D capacity.
2. Fibre Channel (FC) write and 55 MB/s FICON write