HP StoreEasy 1000 Getting Started Manual page 16

Figure 9 StoreEasy 1x50 with the P441 controller utilizing multiple ports
1. P441 controller
2. Connection from P441 controller to port 2 of I/O module A on top of the disk enclosures in Group 2
3. Group 1 of 4 D2000/D3000 enclosures
4. Group 2 of 4 D2000/D3000 enclosures
5. Connection from P441 controller to port 2 of I/O module A on top of the disk enclosures in Group 1
6. Connections between the disk enclosures in Group 1
7. Connections between the disk enclosures in Group 2
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
to all four disk enclosures in a group if one disk enclosure goes down.
NOTE: The cabling diagram in
cabling is exactly the same for the StoreEasy 1440 and 1840 using the P822 controller.
16 Setup and install
Figure 10 (page 17), the worst case scenario is losing access
Figure 10 (page 17) illustrates the StoreEasy 1640 but the