Rebuild; Automatic Rebuild And Manual Rebuild; Automatic Rebuild; Figure 1 - 13 Automatic Rebuild - Compaq External RAID Controller & Subsystem Infortrend Operation Manual

1.6

Rebuild

Automatic Rebuild and Manual Rebuild

1. Automatic Rebuild

Figure 1 - 13 Automatic Rebuild

Rebuild with Spare:
fails, the controller will first examine whether there is a Local Spare
Drive assigned to this logical drive. If yes, rebuild is automatically
started.
If there is no Local Spare available, the controller will search for a
Global Spare.
begins using the Global Spare.
Failed Drive Swap Detect:
Global Spare Drive is available, and the "Periodic Auto-Detect
Failure Drive Swap Check Time" is "Disabled," the controller will not
attempt to rebuild unless the user applies a forced-manual rebuild.
When the "Periodic Auto-Detect Failure Drive Swap Check Time" is
"Enabled" (i.e., a check time interval has been selected), the
controller will detect whether a faulty drive has been swapped (by
checking the failed drive's channel/ID). Once the failed drive has
been replaced by a healthy drive, the rebuild will begin
immediately.
1-9
One member drive
fails in logical drive
Waiting for spare
No
drive to be added
or manual rebuild
When a member drive in a logical drive
If there is a Global Spare, rebuild automatically
Any
Yes
local spare drive
assigned to logical
drive?
No
Any
Yes
global spare drive
assigned to logical
drive?
No
"Periodic
Auto-Detect Failure
Drive Swap Check Time"
enabled?
Yes
Has the
Yes
failed drive been
swapped?
No
Keep detecting if drive
has been swapped or
spare drive has been
added
If neither Local Spare Drive nor
Rebuild using the
local spare drive
Rebuild using the
global spare drive
Rebuild using the
swapped drive
Infortrend