MegaRAID Replacing Disk

Knowledge Base - Hardware
03/08/2017
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This article describes the procedures for replacing a drive when a RAID volume is degraded due to a broken disk.

There are multiple ways of informing system administrators about the (change of) status of the RAID controller:

  • Notification via e-mail, click here for a tutorial on how this is configured.
  • Notification via SNMP, click here for a tutorial on how this is configured.
  • Audio alarm, this is activated by default in the dashboard of the raid controller

Replacing broken disk

The MegaRAID controller will automatically detect if a disk has errors causing the RAID volume to be degraded. An error message will appear on the desktop of that system. The system will also generate a beeping sound indicating it needs attention:

 

To determine which disk is broken the MegaRAID Storage Manager needs to be opened. Use the windows credentials to login, by default VDG/VDG:

 

The dashboard shows that the drive unit needs attention. If the audio alarm is heard, it can be deactivated by clicking ‘Silence Alarm’ in the middle lower part of the screen.

 

By clicking the ‘Logical’ tab the actual status of the drive unit is displayed. In this case the fourth disk (out of three) is broken and missing. If the disk has errors it will still be visible in the list of disks and will show a red icon. The ‘Slot’ indicates the physical location of the disk. For the VDG servers the ‘Slot’ numbering starts in the lower left corner and ends in the upper right corner, counting from left to right and bottom-up.

 

When the disk is replaced it will automatically rebuild the RAID volume, no further action is required: