Contents
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Chapter 6: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
Updating the Firmware in WebPAM PROe . . . . . . . . . . . . . . . . . .249
Downloading the Firmware Image File . . . . . . . . . . . . . . . . . .249
Updating Firmware from TFTP Server . . . . . . . . . . . . . . . . . .250
Updating Firmware from your PC . . . . . . . . . . . . . . . . . . . . . .251
Restarting – Single RAID Subsystem . . . . . . . . . . . . . . . . . . .252
Restarting – RAID with JBOD Expansion . . . . . . . . . . . . . . . .252
Updating the Firmware in the CLU . . . . . . . . . . . . . . . . . . . . . . . .254
Downloading the Firmware Image File . . . . . . . . . . . . . . . . . .254
Updating the Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .254
Restarting – Single RAID Subsystem, Telnet . . . . . . . . . . . . .255
Restarting – RAID with JBOD Expansion, Telnet . . . . . . . . . .255
Restarting – Single RAID Subsystem, SSH . . . . . . . . . . . . . .256
Restarting – RAID with JBOD Expansion, SSH . . . . . . . . . . .257
Restarting – Single RAID Subsystem, Serial . . . . . . . . . . . . .257
Restarting – RAID with JBOD Expansion, Serial . . . . . . . . . .258
Replacing a Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .259
Remove the Old Power Supply . . . . . . . . . . . . . . . . . . . . . . . .259
Install a New Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . .259
Replacing a Cooling Unit Fan or Blower . . . . . . . . . . . . . . . . . . . .260
Replacing a Cache Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .265
Replacing a RAID Controller – Dual Controllers . . . . . . . . . . . . . .269
Removing the old controller . . . . . . . . . . . . . . . . . . . . . . . . . .269
Installing the new controller . . . . . . . . . . . . . . . . . . . . . . . . . .269
Replacing a RAID Controller – Single Controller . . . . . . . . . . . . . .270
Removing the old controller . . . . . . . . . . . . . . . . . . . . . . . . . .270
Installing the new controller . . . . . . . . . . . . . . . . . . . . . . . . . .270
Chapter 7: Technology Background . . . . . . . . . . . . . . . . . . . . . . . .273
Introduction to RAID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273
RAID 0 – Stripe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .274
RAID 1 – Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275
RAID 1E – Enhanced Mirror . . . . . . . . . . . . . . . . . . . . . . . . . .276
RAID 5 – Block and Parity Stripe . . . . . . . . . . . . . . . . . . . . . .277
RAID 6 – Block and Double Parity Stripe . . . . . . . . . . . . . . . .278
RAID 10 – Mirror + Stripe . . . . . . . . . . . . . . . . . . . . . . . . . . . .279
RAID 50 – Striping of Distributed Parity . . . . . . . . . . . . . . . . .280
RAID 60 – Striping of Double Parity . . . . . . . . . . . . . . . . . . . .282
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