Compaq DIGITAL Server Cluster Kits for Windows NT Model number, Capacity GB, Interface, Head type

56

DS-SWXRA-HB	RA7000 Pedestal Disk Expansion Cabinet
	Requires: Expansion Cable Kit (DS-SWXRA-HB) for each
	Disk Expansion Cabinet
DS-BA370-AA	RA7000 Rackmount Disk Expansion Cabinet
	Requires: Expansion Cable Kit (DS-SWXRA-HB) for each
	Disk Expansion Cabinet
DS-SWXRA-GD	RA3000 Disk Expansion Cabinet
	Includes: 120/240 V, with space for an additional 7 Ultra-
	SCSI disk drives, expansion SCSI cable
	Requires: another Software Platform Kit

Step 4 Order Storage Building Blocks (SBB) for the storage and/or expansion cabinets.

The following table compares the 9GB and 18GB disk drives:

Model number	DS-RZ1EF-VA1	DS-RZ40-VA	DS-RZ1EF-VW1	DS-RZ1DF-VW
				FR-RZ1DB-VW
Capacity (GB)	18.2	9.1	18.2	9.1
Interface	Fast SCSI-2	Fast SCSI-2	UltraSCSI	UltraSCSI
Transfer rate	10 (Narrow)	10 (Narrow)	20 (F10)	20 (F10)
(MB per second)
Internal data rate	170	121	170	121
(Mbits/sec - max)
Cache	1 MB	1 MB	1 MB	1 MB
Average seek Read/	7.5/8.5	7.5/8.5	7.5/8.5	7.5/8.5
Write (ms)
Average latency	4.17	4.17	4.17	4.17
(ms)
Recording method	PRML	Peak	PRML	Peak
Head type	MR	MR	MR	MR
RPM	7,200	7,200	7,200	7,200
Power (idle watts)	14.5	13.0	14.5	13.0
Height (inches)	1.6	1.6	1.6	1.6
Form factor (inches)	3.5	3.5	3.5	3.5

1Supported on the RA450, RA7000, and RA3000

DIGITAL Server Cluster Kits for Windows NT Configuration Guide