Compaq StorageWorks RAID Array 3000 Controller Shelf User Manual page 5

Chapter 4
Second Controller Option
Installing the Upgrade..........................................................................................4-2
Saving the Existing Configuration .................................................................4-3
Updating Firmware .......................................................................................4-5
Shutting down the RA3000 ...........................................................................4-7
Installing Two SIMMs into Second Controller...............................................4-8
Replace Existing Controller...........................................................................4-9
Restoring the Configuration ........................................................................4-10
Updating the Firmware on a Second Controller............................................4-11
Installing theOriginal Controller..................................................................4-11
Configuring a Dual-Controller Installation for a Single Serial Port......................4-12
Configuring the RA3000 for the Active Mode of Operation .........................4-12
Configuring the Dual Controllers.................................................................4-13
Connecting to Your Dual-Controller Storage System ...................................4-15
Verifying the Controller Operating Parameters ............................................4-15
List of Figures
Figure 1-1. RAID Array 3000 Controller Shelf....................................................1-2
Figure 1-2. RAID Array 3000 6-slot Device Expansion Shelf (optional) ..............1-3
Figure 1-3. Controller shelf major components ....................................................1-7
Figure 1-4. RAID Array 3000 controller..............................................................1-8
Figure 1-5. Device I/O module..........................................................................1-10
Figure 1-6. Device I/O module blower-status LEDs...........................................1-11
Figure 1-7. Host I/O module .............................................................................1-12
Figure 1-8. Power supply ..................................................................................1-14
Figure 1-9. Single host, single adapter, with one active controller ......................1-17
Figure 1-10. Single host, single adapter, with two active controllers...................1-18
Figure 1-11. Single host, dual adapter, two ports with two active controllers......1-19
Figure 1-12. Dual host, single adapter, with one active controller per host..........1-20
Figure 2-1. RAID Array 3000 single controller block diagram.............................2-2
Figure 2-2. Bridging the gap between the host and device expansion shelf ...........2-3
Figure 2-3. Storagesets, partitions, and disk drives...............................................2-4
Figure 2-4. Controller front panel ........................................................................2-6
Figure 2-5. RAID 0 write ..................................................................................2-10
Figure 2-6. Diagram of a RAID 1 write .............................................................2-11
Figure 2-7. Diagram of RAID 0+1 write............................................................2-12
Figure 2-8. Diagram of a RAID 4 write .............................................................2-14
Figure 2-9. Diagram of a RAID 5 write .............................................................2-16
Figure 3-1. Recommended single expansion shelf installation..............................3-3
Figure 3-2. Recommended controller shelf installation (two expansion
shelves)...........................................................................................3-4
Figure 3-3. Recommended controller shelf installation (three expansion
shelves)...........................................................................................3-5
Contents v