Drive Type
Size (inches)
1
Drive Capacity Speed (RPM)
HDD, 3-1/2 DBL 12 1.152
FMD, 5-1/4 DBF 12 96
SSD, 2-1/2
128
2
24 (DBS) or 48 (DBX)
128
3
Spare drives
4
64
Notes.
1. the dense drive tray uses only 3-1/2 in. drives. The DBL (LFF) drive tray uses 3-1/2 in. drives. The
DBS (SFF) drive tray uses 2-1/2 in. drives.
2. SSD drives can be mounted all in one drive tray or spread out among all of the drive trays in the
storage system.
3. Recommended maximum number.
4. Recommended number of spare drives: one spare drive per set of 32 HDDs and one per set of 32
SSDs.
Mechanical specifications
The following table lists the mechanical specifications of the HUS VM storage
system.
Note: The current and power specifications in the following tables were
measured on a HUS VM system in a controlled environment. To calculate the
power draw, current draw, and heat output of a specific system, see
Table
4-9 HUS VM component specifications on page 4-12 or (easier) use the Power
and Weight calculator at the following URL.
http://www.hds.com/go/weight-and-power-calculator/
Contact technical support if you need assistance using this tool. See Getting
help on page xi in the preface of this manual.
Table A-3 HUS VM mechanical specifications
Dimension Single Rack Two racks Three racks
Width (inches / mm) 23.5 / 600 47 / 1200 70.5 / 1800
Depth (inches / mm) 43.3 / 1100 43.3 / 1100 43.3 / 1100
Height (inches / mm) 79 / 2100 79 / 2100 79 / 2100
System
Weight
(lbs / kg) 767 /346 (diskless)
2166 / 984
(384 LFF drives)
4165 / 1887
(768 LFF drives)
6165 / 2793
(max - 1152 LFF
drives)
Rack
Weight
(lbs / kg) 319.4 / 145.2 Rack Weight is included in system
weight
PDU
wright
(lbs / kg) 36 -40 / 79 - 88
(8 - 10 / 17.7 - 22 per
PDU)
PDU weight is included in rack weight.
A-4
Specifications
Hitachi Unified Storage VM Block Module Hardware User Guide