Format: START <parameter>
1 – RECOVER
Smart Array backplane RAID controllers using parallel SCSI expect to be connected to enclosures that have individual built in enclosure processors. This processor or Environmental Monitoring Unit (EMU) monitors fans, controls LEDs and so on. The EMU also provides information about hot-plug events available in the enclosure. The Smart Array controller is thus always aware of the insertion or removal of a SCSI disk drive when used with such type of enclosures, like MSA30. The 64xx series Smart Array card can also be cabled to the internal parallel SCSI drives on applicable I64 platforms. These drives are housed in an enclosure that is totally passive with respect to hot-plug event notification. The Smart Array controller cannot detect that a physical disk has been hot-inserted. If a RAID physical disk fails and must be replaced, the controller will not start the recovery process on the affected RAID volumes. After replacing the bad disk(s) with the new disk(s), if the system is rebooted before issuing the SCAN ALL command, then all the affected RAID volumes configured on these disks will move to the "VOLUME ready for recovery operation" state. The REBUILD operation will not start automatically. The "START RECOVER" command will initiate the REBUILD operation for all the UNITs configured in the disk group sequentially. Note that "hiding" the insertion of a new disk from the controller can result in the REBUILD operation not starting automatically, even if the controller can detect hot-plug events, such as when connected to a MSA30. Removing a disk while the host system is running, and replacing the disk while the host system is powered off, will effectively hide the insertion. The START RECOVER command will initiate the REBUILD operation in such scenarios also. This command is supported on both OpenVMS Alpha and OpenVMS I64 platforms. Note: Refer to SCAN ALL command for additional information on rebuild of volumes. Format: START RECOVER
1.1 – Parameters
None
1.2 – Qualifiers
None
1.3 – Examples
MSA> START RECOVER