FAQ-What Can I Do when Two Disks in a RAID 6 Group Are Faulty

Publication Date:  2015-08-05 Views:  264 Downloads:  0
Issue Description
What can I do when two disks in a RAID 6 group are faulty?

Solution
Products and versions:

VTL6000 V100R003C02
VTL6900 V100R005

Do not replace two faulty disks at a time. As for the VTL6000, perform the following operations:

1.  Check whether the data on faulty disks has been precopied for backup.

a. In the navigation tree of the ISM for storage units, click Physical.
b. On the Physical tab page, click Controller Enclosure xx or Disk Enclosure xx, where xx indicates the ID of a controller enclosure or disk enclosure.
c. In the function pane, click the Device Figure tab.
d. Go to the Disk Properties dialog box by either of the following ways:
    Click a disk icon.
    Right-click a disk icon and select Properties... from the shortcut menu.
e. In the function pane, check the operating status of faulty disks. After the precopy is complete, perform follow-up operations.
    After the data on faulty disks is precopied, the faulty disks become hot spare disks. Therefore, if the operating status of faulty disks is Hot Spare Disk, the precopy is complete.

NOTE:
   Disk precopy enables the storage system to monitor the disk status. When a member disk in a RAID group is about to fail, data on the disk is precopied to a hot spare disk to reduce data loss risks. The storage system automatically implements precopy without manual intervention.

2.  Replace the faulty disks.
     For details, refer to the OceanStor VTL6000 Virtual Tape Library V100R003 Troubleshooting.

As for the VTL 6900, perform the following operations:

1.  Check whether the data on faulty disks is precopied for backup.

a. In the navigation tree of the ISM for storage units, expand the Device Info node.
b. Choose Storage Unit > Disks.
c. In the function pane, check the operating status of faulty disks. After the precopy is complete, perform follow-up operations.
   After data on faulty disks is precopied, the faulty disks become hot spare disks. Therefore, if the operating status of faulty disks is Hot Spare Disk, the precopy is complete.

NOTE:
   Disk precopy enables the storage system to monitor the disk status. When a member disk in a RAID group is about to fail, data on the disk is precopied to a hot spare disk to reduce data loss risks. The storage system automatically implements precopy without manual intervention.

2.  Replace the faulty disks.
     For details, refer to the OceanStor VTL6900 Virtual Tape Library V100R005 Parts Replacement.

END