How To Recover The Failed Disk - NEC Express5800 Series Maintenance Manual

Chapter 2 Configuring and Upgrading the System
1.5

How to Recover the Failed Disk

The procedure for replacing the failed hard disk drive and duplicate the drive again is described here. The
following is an example of the step starting from disconnection of the hard disk drive inserted into Slot 9 to its
recovery.
1. Log in to the server as the root user. If you login with graphical mode, select [Others...] to login.
2. Execute "6 Remove Disk Partitions (RAID1)" of the ftdiskadm command, specify the slot number of the hard
disk drive in which a failure occurs, and disconnect the drive.
# ftdiskadm
Command action
1 List RAID Arrays
2 List Internal Disks
3 Make Mirroring Arrays
4 Repair Mirroring Arrays (RAID1)
5 Delete Mirroring Arrays (RAID1)
6 Remove Disk Partitions (RAID1)
7 Make Striping Array
8 Delete Striping Array
c Configurations
q Quit
Command: 6 ------------------------------------------------------ (*1)
[Remove Disk Partitions (RAID1)]
* Which SCSI SLOT? [1-16] 9
mdadm : hot removed /dev/sdr2 from /dev/md123
mdadm : hot removed /dev/sdr5 from /dev/md124
mdadm : hot removed /dev/sdr3 from /dev/md125
mdadm : hot removed /dev/sdr4 from /dev/md126
mdadm : hot removed /dev/sdr1 from /dev/md127
(omitted)
Command: 1 ------------------------------------------------------ (*2)
[List RAID Arrays]
Name Partition
===============================================================================
< Mirroring Array (RAID1)
md123 /var/crash
md124 /boot/efi
md125 swap
md126 /boot
md127 /
*1 Disconnect the hard disk drive to be specified by the slot number.
*2 Check that the hard disk drive is disconnected.
3. Replace the hard disk drive by referring to "5.3 2.5-inch Hard Disk Drive" in this chapter.
4. Execute "2 List Internal Disks" of the ftdiskadm command, and check that the new hard disk drive is
recognized by the system.
96
For the slot number, refer to "1.1 Available Disk Configuration" in this chapter.
Tips
(RAID1)
(RAID1+0)
(RAID1+0)
Status
>
SIMPLEX
SIMPLEX
SIMPLEX
SIMPLEX
SIMPLEX
Express5800/R320e-E4, R320e-M4 Maintenance Guide (Linux)
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1. Hard Disk Drive Duplexing