SCSI Solutions White Paper - HP-UX

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2.2 Tape Products
HP supports a wide range of SCSI tape solutions for HP-UX servers, including various types of
tape drives, autoloaders, and libraries. Currently available tape drives, from lower to higher
capacity and speed, include the following shown in Table 2.
Table 2: Tape Drive Products
1
Compressed (2:1) capacity/speed. Native capacity/speed is one-half these values.
Speed=sustained data rate.
2
Mean Time Before Failure (MTBF) in thousands of hours.
3
Average power consumption (watts)
4
5¼ inch half-height or full-height form factor. DAT 24 and 40 also have 3 1/2 inch options.
* When used with Ultra320 HBAs the Ultrium 960 must currently be speed-limited to Ultra160
(160 MB/s) speeds, which lowers the achievable sustained data rate to below 160 MB/s.
HP also has a variety of autoloaders and libraries which work with a variety of the tape drive
products to provide for automated backup, larger storage capacities, and advanced availability
and management features. Note: the majority of larger tape libraries are used in Fibre Channel
storage area networks, and use FC-to-SCSI routers to convert to the device’s pSCSI interface.
The StorageWorks Network Storage Routers N1200 and M2402 are two supported FC-to-SCSI
routers.
2.2.1 Tape Array 5300
HP offers a compact and flexible tape enclosure, the Tape Array 5300, which can meet many
of the availability and flexibility needs of autoloaders and small tape libraries without the higher
cost. The HP StorageWorks Tape Array 5300 is a 3U rack enclosure that holds two full-height
array modules or four half-height, or one full height and two half-heights. The enclosure slots
are offline hot-swappable
4
, allowing you to replace drives without taking down the server. It
also comes with an option for a redundant hot-swap fan and power supply for even greater
4
Offline hot-swap drive modules can be added or removed while the array is powered up and the SCSI cables connected to servers, but
the SCSI bus must be quiescent, which means no activity on the bus from any host to any drive on the bus.
Capacity
1
Reliability
2
Power
3
Form
4
SCSI
(GB) (MB/s) (GB/hr) (MTBF) (watts) Factor Interface
DAT 24
24 2 7.2 37.5
6 Fast Narrow SE
DAT 40
40 6 21.6 7.3
DAT 72
72 6 21.6 7.1
DLT VS80
80 6 21 200 Ultra Wide
DLT VS160
160 16 57.6 250 Ultra160
SDLT 110/220
220 22 79
SDLT 160/320
320 32 115 27
SDLT 300/600
600 72 259 33 Ultra160
Ultrium 215
200 15 54 19 half-height
Ultrium 230
200 30 108 full-height
Ultrium 448
400 48 173 half-height
Ultrium 460
400 60 216 25
Ultrium 960
800 160* 576 30 Ultra320
Ultrium
DAT 4mm
Cassette
Speed
1
Tape Drive Products
SDLT
DLT
Cartridge
250
250
125
15
21
Ultra Wide
Ultra2 Wide
Ultra2 Wide
Ultra160
half-height
half-height
full-height
full-height