User Manual

626
Vess R2000 Series Product Manual Promise Technologies
RAID contRolleR PRoBleMS
RAID controller problems include:
• “MaintenanceMode”(below)
• “StorageTab”onpage619
• “TakingaRAIDControlleroutofMaintenanceMode”onpage628
• “UnsavedDataintheControllerCache”onpage630
Controller problems occur when one of the controllers goes into maintenance mode.
MaiNteNaNCe Mode
For Vess with two RAID controllers, one of them enters maintenance mode in the event of:
• Adifferenceofsomekindbetweenthetwocontrollers(describedbelow)
• Aninternalcontrollerfailure
When a controller enters maintenance mode, it goes ofine and it displays N/A (not accessible) under Readiness
Status.
You must nd and correct the cause of the problem and then take the controller out of maintenance mode (see
page 628).