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6 junio, 2013

Hot-swapping the hard drives when the RAID crashes

by WebMaster

“No server downtime when you need to replace the RAID drives”

Contents

Procedure of hot-swapping the hard drives when the RAID crashes

RAID 5 disk mirroring provides highly secure data protection. You can use two hard drives of the same capacity to create a RAID 5 array. The RAID 5 creates an exact copy of data on the member drives. RAID 5 protects data against single drive failure. The usable capacity of RAID 5 is the capacity of the smallest member drive. It is particularly suitable for personal or company use for important data saving.

Logical volume status when the RAID operates normally

When the RAID volume operates normally, the volume status is shown as Ready under ‘Disk Management’ > ‘Volume Management’ section.

When the RAID operates normally

When a drive fails, follow the steps below to check the drive status:

When RAID volume operates normally, the volume status is shown as Ready in the Current Disk Volume Configuration section.

  • The server beeps for 1.5 sec twice when the drive fails.
  • The Status LED flashes red continuously.
  • Check the Current Disk Volume Configuration section. The volume status is In degraded mode.

When RAID crashes

You can check the error and warning messages for drive failure and disk volume in degraded mode respectively in the Event Logs.

Log information for the drive plug out event

Note: You can send and receive alert e-mail by configuring the alert notification. For the settings, please refer to the System Settings/ Alert Notification section in the user manual.

Install a new drive to rebuild RAID 5 by hot swapping

Please follow the steps below to hot swap the failed hard drive:

  • Prepare a new hard drive to rebuild RAID 5. The capacity of the new drive should be at least the same as that of the failed drive.
  • Insert the drive to the drive slot of the server. The server beeps for 1.5 seconds twice. The Status LED flashes red and green alternatively.
  • Check the Current Disk Volume Configuration section. The volume status is Rebuilding and the progress is shown.

Log information for the drive plug out event

  • When the rebuilding is completed, the Status LED lights in green and the volume status is Ready. RAID 5 mirroring protection is now active.
  • You can check the disk volume information in the Event Logs.

Log information for the drive plug in and RAID rebuilding event

Note: Do not install the new drive when the system is not yet in degraded mode to avoid unexpected system failure.

Obtained from this link

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Última actualización 24/02/2018 23:09; Última actualización de contenido 28/01/2014 12:57