
PRIMEQUEST 2000 Series Design Guide
3.3.4 HDD Configuration (1/5)
Guidelines for Selecting a RAID Configuration for HDDs
Redundancy with "SAN boot + multipath driver" is recommended for reliability.
Item
Software RAID
Hardware RAID
SAN boot + multipath driver
OS standard
PRIMECLUSTER GDS
Inside of an SB or DU (*1)
External hard disk cabinet (JX40 S2)
OS
(*2)
Supported with RHEL
Supported
Supported
Supported
High-speed access
Relatively slow
Relatively slow
Supported
Supported
Supported
Card duplication
Supported
Supported
Not supported
Not supported
Supported
Path duplication
Supported
Supported
Not supported
Not supported
Supported
RAID level
Depends on the software
1
1, 1E, 5, 6, 10
Available at the RAID levels that are
supported by the SAS array controller card
that is connected to JX40 S2
Available at the RAID level of the
storage device being used
Device duplication at
boot time
Not supported
Supported
Supported
Supported
Supported
Notes (1/2)
•
If an unpredictable power supply problem occurs, data in the cache (*) that is equipped in a
hardware RAID or disk may be lost.
To avoid such a problem, make sure to consider installing a redundant power supply or dual
power feed option as well as a CVCF or UPS.
(*) A hardware RAID uses the cache on the hardware when Write Back or Always Write Back is specified.
A disk uses the cache on the hardware when the disk cache is enabled.
Copyright 2016-2017 FUJITSU LIMITED
(*1) For details, refer to "
3.3.2 Guidelines for Selecting Internal Storage
".
(*2)
For details on the supported OSs or virtualization software, refer to the related documents of the OS or virtualization software.
92