Chapter 6 Redundancy; Redundancy Of Components; Redundancy Of Hdd; Redundancy Of The System Disk - Fujitsu PRIMEQUEST 2000 Series General Description Manual

CHAPTER 6 Redundancy

6.1 Redundancy
This section describes the redundancy configuration of components.
6.1 Redundancy
In the PRIMEQUEST 2000 series, such as the memory, I/O, transmission paths, the power supply system
and fan of the hardware configuration, most of the sections allow for redundancy, and achieve high reliability
and high availability.
6.2

Redundancy of components

For details on the components with redundancy configuration, see '3.3.1 Replaceable components' of
"PRIMEQUEST 2000 Series Administration Manual" (C122-E175EN)
6.3

Redundancy of HDD

This section describes the HDD redundancy in the PRIMEQUEST 2000 series.

6.3.1 Redundancy of the system disk

In the PRIMEQUEST 2000 series, redundancy can be created using several procedures, depending on the
allocation of the system volume.
Redundancy procedure
The redundancy in the single volume is achieved using
the hardware RAID function. The volume is not
affected even if the HDD of the volume fails, and the
system can continue booting or running. (This excludes
RAID 0 configuration)
Although redundancy is not possible in a single unit
alone, it can be achieved by creating a software
mirroring configuration using multiple volumes (using
PRIMECLUSTER GDS and so on). Even if a problem
occurs in the volume on one side, it is possible to
continue the system boot and system startup in the
volume on the other side.
Redundancy can be achieved in a single volume, since
the hardware RAID configuration is used in the external
RAID device. Redundancy of boot paths is also
possible by installing a multi-path configuration.
Redundancy of volume can also be achieved by
configuring software mirroring between volumes of
multiple RAID cabinet (using PRIMECLUSTER GDS).
If a problem occurs in the cabinet on one side, it is
possible to continue the system boot and system
startup in the cabinet on the other side.
CHAPTER 6
TABLE 6.1 System disk redundancy
Redundancy
Single volume Inter-volume
Redundancy is Redundancy is
possible not possible
Redundancy is Redundancy is
not possible possible
Redundancy is Redundancy is
possible possible
82
Boot path
Redundancy is
not possible
Redundancy is
possible
Redundancy is
possible
C122-B025-02EN