Using The Trust Command - HP P2000 G3 MSA Reference Manual

Using the trust command

The CLI trust command should only be used as a last step in a disaster recovery situation. This command
has the potential to cause permanent data loss and unstable operation of the vdisk. If a vdisk with a single
disk is in a leftover or failed condition, the trust command should never be used. The trust command
should only be used if the vdisk is in an Offline state.
If a single disk in a vdisk has failed or been placed into a Leftover state due to UREs, Smart Trip, Sense
Key, or other errors, reintegrating the disk into the same or a different vdisk has the potential to cause data
loss. A hard drive that has failed or been placed into a Leftover state due to multiple errors should be
replaced with a new hard drive. Assign the new hard drive back to the vdisk as a spare and allow
reconstruction to complete in order to return the vdisk to a fault tolerant state
The trust command attempts to resynchronize leftover disks in order to make any leftover disk an active
member of the vdisk again. The user might need to take this step when a vdisk is offline because there is
no data backup, or as a last attempt to try to recover the data on a vdisk. In this case, trust may work,
but only as long as the leftover disk continues to operate. When the "trusted" vdisk is back online, backup
all data on the vdisk and verify all data to ensure it is valid. The user then needs to delete the trusted vdisk,
create a new vdisk, and restore data from the backup to the new vdisk.
IMPORTANT: Using trust on a vdisk is only a disaster-recovery measure; the vdisk has no tolerance for
additional failures and should never be put back into a production environment.
CAUTION: Before trusting a vdisk, carefully read the cautions and procedures for using the trust
command in the CLI Reference Guide and online help.
Once the trust command has been issued on a vdisk, further troubleshooting steps may be limited
towards disaster recovery. If you are unsure of the correct action to take, contact HP Support for further
assistance.
HP P2000 G3 MSA System Event Descriptions Reference Guide 61