Chapter 4 Rack and Optional Product Installation
4.3 Installation Guide for Optional Products
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Site Planning-
62
Copyright 2011 FUJITSU LIMITED
P3AM-4822-03ENZ0
Table 4.2
Specifications for the unit installation area
■
Placement conditions
When determining service areas, refer to the installation document of the rack to be used.
Install air conditioning in order to ensure that the interior temperature of the rack satisfies the
temperature conditions listed in
"2.1 Installation Specifications" (page 28)
and
.
4.3
Installation Guide for Optional Products
Select optional products that are to be installed in the ETERNUS DX Disk storage system
according to the customer's operating environment.
This section provides a guideline for how many hot spares should be installed.
4.3.1
Hot Spares
Separate hot spares are required for each type of drive that is installed (SAS disks, Nearline SAS
disks, and SSDs). The capacity of each type of hot spare must be equal to the largest capacity of
the same-type drives.
The number of required hot spares is determined by the total number of drives.
The following table shows the recommended number of hot spares for each drive type.
Table 4.3
Recommended number of hot spares for each drive type
Specification
Condition
(1)
Rack front space
(From the fixed part of the ETERNUS DX Disk storage
system on the front side to the inner side of the front
rack door)
40mm or more
(2)
Mount bracket length
(Size between each end of the front and rear rack
pillars)
685mm to 775mm
(3)
Rear area in the inside of the rack
(From the fixed part of the ETERNUS DX Disk storage
system on the rear side to the inner side of the rear rack
door)
60mm or more (recommended)
(4)
Rack space
(From the fixed part of the ETERNUS DX Disk storage
system on the front side to the inner side of the rear
rack door)
830mm or more
(5)
Rack mount kit installation area
482mm or more (recommended)
Model
Total number of drives
up to 120
up to 240
ETERNUS DX80 S2
1
—
ETERNUS DX90 S2
1
2