NEC Express5800/320Fc Manual download pdf (Page 51)

Setting Up Internal Disk Storage

Setting Up the ftServer System 5-3

Since some disk-configuration operations produce considerable console output, it can

be helpful to log on to another session.

Configuring Internal Disks

The six internal storage disks are persistently named based on the slot that they

occupy. As shown in

Figure 5-1, in the upper CPU-I/O enclosure, the disks are

/dev/sda, /dev/sdb, and /dev/sdc, from bottom to top. In the lower CPU-I/O enclosure,

they are /dev/sdd, /dev/sde, and /dev/sdf, from bottom to top. The name is associated

with the slot, not the disk.

Figure 5-1. CPU-I/O Enclosures: Front Panel with Drive Slots Fully Populated

The Linux operating system allows many possible configurations of these six disks.To

simplify administration and reduce confusion, this section presents recommended

configurations.

For convenience, the disks are used in pairs based on vertical grouping of the disks in

the CPU-I/O enclosures; sda is paired with sdd, sdb with sde, and sdc with sdf. RAID-1

arrays are created by placing one mirror on each disk of the pair. For example, RAID

array /dev/md0 occupies sda1 and sdd1.

Each SAS (SATA) disk in a pair must be the same size.

In the CPU-I/O enclosure internal disk slots, insert only hard drives provided by

NECAM. Inserting any other type of device may cause data loss or system failure.

Managing Partitions

You can use the fdisk or sfdisk utilities to display and change a disk's partition table

and geometry (see fdisk(8) and sfdisk(8) for details). During the Linux operating system

installation, all of the mirrored boot partitions are created as type 0xfd (Linux RAID

asys076

sda

sdb

sdc

sdd

sde

sdf

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NEC Express5800/320Fc Manual Page 51