Fujitsu TX200 Manuale Utente

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 in the standard server. When the internal hard disk unit bay

conversion kit is used, up to nine 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 9 units

• RAID level 1: 2 units

• RAID level 5 (recommended): 3 to 9 units

• RAID level 10: Even number of units between 4 and 8

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 configuration.

For more details on the array configuration, refer to "PRIMERGY ServerBooks" supplied with the

server, and "Supplement" supplied with options.

table: Array Configuration

Item

Contents

Number of physical packs

Number of system drives

Pack order of hard disk units

Channels 0 and 1 are packed alternately in ascending order of SCSI-
ID set for the hard disk units (in a two-channel configuration).
E.g.:(In a two-channel configuration)
Pack A-1 Channel 0 SCSI-ID 0
Pack A-2 Channel 1 SCSI-ID 0
Pack A-3 Channel 0 SCSI-ID 1
Pack A-4 Channel 1 SCSI-ID 1
Pack A-5 Channel 0 SCSI-ID 2
When a hot spare is specified, the hard disk unit with the smallest
channel number and the smallest SCSI-ID will be used as the hot
spare hard disk unit (normally, Channel 0 and SCSI-ID 0).