Replacing a failed SSD (hot-plug)

To replace a failed SSD in a running cluster

1. Use flashgrid-cluster drives  command to determine the following information about the failed SSD:

• FlashGrid name of the SSD, e.g. rac2.failedserialnumber
• ASM name of the SSD, e.g. RAC2$FAILEDSERIALNUMBER
• slot number where the SSD is installed
• whether the ASM disk is online, offline, or dropped (ASMStatus=N/A)

2. Drop the failed SSD from the ASM disk group if it has not been dropped yet. Examples:

   a. If the failing ASM disk is still online:

   SQL> alter diskgroup MYDG drop disk RAC2$FAILEDSERIALNUMBER rebalance wait;

   b. If the failed ASM disk is offline, but has not been dropped by ASM:

   SQL> alter diskgroup MYDG drop disk RAC2$FAILEDSERIALNUMBER force;

3. Physically remove the failed SSD.

4. Plug in a new SSD in the same drive slot.

5. Use flashgrid-node

    command to determine its FlashGrid name, e.g. rac2.newserialnumber

6. Add the new SSD to the ASM disk group that the failed SSD was in. Example:

   $ flashgrid-dg add-disks -G MYDG -d /dev/flashgrid/rac2.newserialnumber

If you have to re-add the same SSD that was used before or add a different SSD that already has ASM metadata on it then you have to add it using the force option -f. Example:

$ flashgrid-dg add-disks -G MYDG -d /dev/flashgrid/rac2.newserialnumber -f