Quickspecs, Hp storageworks dat drives – HP 40 SCSI User Manual

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Shipping Hot-Plug

N/A

2.9 lb (1.3 kg)

8.8 lb (4.0 kg)

Shipping Array Module

7.9 lb (3.6 kg)

Capacity

DAT 24

DAT 40

DAT 72

Native

12 GB

20 GB

36 GB

Compressed

Compressed
(assumes 2:1data
compression)

24 GB

40 GB

72GB

Buffer Size

Buffer Size (SCSI)

2 MB

8 MB

Buffer Size

Buffer Size (USB)

8MB

Performance

DAT 24

DAT 40

DAT 72

Sustained Transfer Rate

Sustained Transfer Rate
(native)
Where 1KB = 1,000
Bytes

>1.5 MB/s

3.2 MB/s

Sustained Transfer Rate

Sustained Transfer Rate
(with 2:1 data
compression)
Where 1KB = 1,000
Bytes

>3 MB/s

6.4 MB/s

Burst Transfer Rate

Burst Transfer Rate
Where 1KB = 1,000
Bytes

3 MB/s (asynchronous)
10 MB/s (synchronous)

6.4MB/s (asynchronous)

40 MB/s (synchronous)

6.4 MB/s (asynchronous)

40 MB/s (synchronous)

Burst Transfer Rate

Burst Transfer Rate
(SCSI-3 interface)
Where 1KB = 1,000
Bytes

N/A

6.4 MB/s (asynchronous)

160 MB/s (synchronous)

Burst Transfer Rate

Burst Transfer Rate (USB
interface)Where 1KB =
1,000 Bytes

6.4MB/s (asynchronous)

40 MB/s (synchronous)

6.4MB/s (asynchronous)

40 MB/s (synchronous)

6.4 MB/s (asynchronous)

40 MB/s (synchronous)

Data Access Time

Data Access Time
(SCSI)

40 s

50 s

68 s

Average Load Time

Average Load Time
(SCSI)

14 s

15 s

Average Unload Time

Average Unload Time
(SCSI)

14 s

15 s

Rewind Time

Rewind Time (SCSI)

80 s (end to end)

110 s (end to end)

120 s (end to end)

Rewind Tape Speed

Rewind Tape Speed
(SCSI)

1.56 m/s

1.41 m/s

Data Access Time

Data Access Time (USB)

40 s

50 s

68 s

Average Load Time

Average Load Time
(USB)

15 s

Average Unload Time

Average Unload Time
(USB)

15 s

Rewind Time

Rewind Time (USB)

90 s (end to end)

110 s (end to end)

120 s (end to end)

QuickSpecs

HP StorageWorks DAT Drives

Technical Specifications

DA - 11883 Worldwide — Version 15 — March 20, 2006

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