Notes On Configuring Raid - Fujitsu PRIMERGY RX300 S2 User Manual

Chapter 2 Checking before OS Installation

2.3.2 Notes on Configuring RAID

Take the following notes when you configure a RAID system.
■ Hardware Configuration
• Only internal hard disk units can be used.
• Be sure to use hard disk units of the same model and with the same capacity.
• Up to six hard disk units can be installed. Do not set the number of units more than the maximum.
• The number of units that can be set at each RAID level is as follows.
• RAID level 0: 2 to 6 units
• RAID level 1: 2 units
• RAID level 5 (recommended): 3 to 6 units
• RAID level 10: 4 or 6 units
When the OS is installed using ServerStart, only one RAID card can be installed. If you need more
cards, install them after OS installation.
■ Array Configuration
The following shows the pack order of hard disk units for a two-channel array configuration by
ServerStart.
For more details on the array configuration, refer to "PRIMERGY RX300 S2 Onboard SCSI RAID
User's Guide".
Item
Number of physical packs
Number of system drives
Pack order of hard disk units
48
table: Array Configuration
Contents
1
1
Channel 0 is packed preferentially in ascending order of SCSI-ID
set for the hard disk units.
E.g.:(In a two-channel configuration)
Pack A-1 Channel 0 SCSI-ID 0
Pack A-2 Channel 0 SCSI-ID 1
Pack A-3 Channel 0 SCSI-ID 2
Pack A-4 Channel 1 SCSI-ID 0
Pack A-5 Channel 1 SCSI-ID 1
When a hot spare is specified, the hard disk unit with the largest
channel number and the largest SCSI-ID will be used as the hot
spare hard disk unit.