Promise Technology 2-Year Extended Warranty for VessR2000 RAID Head - Manual (Page 653)

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Vess R2000 Series Product Manual Promise Technologies
RAID c
ontRolleR
P
RoBleMS
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.
M
aiNteNaNCe
M
ode
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 offline and it displays N/A (not accessible) under Readiness
Status.
You must find and correct the cause of the problem and then take the controller out of maintenance mode (see
page 628).