HP StoreEasy 1000 Storage Administrator's Manual page 29

5. Connection from P822 controller to port 2 of I/O module A on the top disk enclosure in Group 2
6. Connections between the disk enclosures in Group 2
7. Connections between the disk enclosures in Group 1
An alternate way of connecting the D2000 disk enclosures to the P822 controller is to have 4
groups of 2 disk enclosures each. This cabling option provides better fault tolerance because the
worst case scenario (besides a controller failure) is losing access to two disk enclosures if one disk
enclosure goes down. In
disk enclosures in a group if one disk enclosure goes down.
NOTE: The cabling diagram in
cabling is exactly the same for the HP StoreEasy 14x0 and 18x0 using the P822 controller.
Figure 26 (page 30), the worst case scenario is losing access to all four
Figure 26 (page 30) illustrates the HP StoreEasy 16x0 but the
Cabling the storage system 29