2
DPE Powerdown
2-17
Installing a Deskside DPE
Never remove the fan pack and then shut off the power supply to shut
down an DPE. Shutting off power in that way eliminates the SPS
function, saving write cache data to the vault drives, and results in a
cache dirty condition (data loss). When that happens, LUNs become
inaccessible and the unsolicited event log displays a message similar to:
Enclosure 0 Disk 5 0x90a (Can’t Assign - Cache Dirty)
0 0xafb40 0x14362c.
Navisphere® Manager or Supervisor will
show that the inaccessible LUNs are unowned. Contact your service
provider if this situation occurs. The LUNs may need to be unbound and
rebound.
Turning On Power
Reverse the steps to power up the DPE.