Compaq ProLiant 1000 User Guide: Online Storage Controller Recovery Option - Page 71

Recoving from Mass Storage Controller Failure

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6-2 Recoving from Mass Storage Controller Failure 4. Use the Online Storage Controller Recovery Utility to perform a manual Switch operation, thus making the controller the active controller of the controller pair (see Figure 6-1). 1 0 1 0 Active Standby Failed 1 0 1 Active 1 0 1 Active 1 0 1 Standby Active 1 1 1 1 0 0 0 0 1 1 1 1 Device Driver Device Driver Device Driver Device Driver A controller pair is established. If a controller fails, standby becomes active. PCI slot powered Controller replaced and down and failed controller pair is controller removed. re-established. Figure 6-1. Compaq PCI Hot Plug Technology Recovery from Controller Failure with OSCRO Using this procedure, the fault-tolerant state of the I/O subsystem is restored without shutting down the system or interrupting the availability of the data.

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6-2
Recoving from Mass Storage Controller Failure
4.
Use the Online Storage Controller Recovery Utility to perform a manual
Switch operation, thus making the controller the active controller of the
controller pair (see Figure 6-1).
1
0
1
1
0
1
1
0
1
1
0
1
0
Device
Drive
r
Device
Drive
r
Device
Drive
r
Device
Drive
r
Active
Active
Active
Active
Standby
Failed
Standby
1
0
1
1
0
1
1
0
1
1
0
1
A controller pair
is established.
If a controller fails,
standby becomes active.
PCI slot powered
down and failed
controller removed.
Controller replaced and
controller pair is
re-established.
Figure 6-1.
Compaq PCI Hot Plug Technology Recovery from Controller Failure with OSCRO
Using this procedure, the fault-tolerant state of the I/O subsystem is restored
without shutting down the system or interrupting the availability of the data.