Cabling Two Powervault 22Xs Storage Systems To A Cluster Se500W - Dell PowerEdge Cluster SE500W Installation And Troubleshooting Manual

Cabling Two PowerVault 22xS Storage Systems to a Cluster SE500W

Connecting the cluster to two PowerVault 22xS storage systems is similar to connecting the
cluster to a single PowerVault 22xS storage system. Connect channel 0 of the PERC RAID
adapter in each node to the back of the first storage system, as described in "Cabling One
PowerVault 22xS Shared Storage System to a Cluster SE500W." Repeat the process for channel 1
on the controller in each node using a second PowerVault 22xS storage system. See Figure 2-3.
With dual storage systems connected to a single PERC RAID adapter, mirroring disk drives
from one storage system to another is supported through RAID 1 and 1+0. To protect the
cluster applications and your data if an entire storage system fails, Dell strongly recommends
using RAID 1 or 1+0.
NOTE:
If you have dual cluster-enabled PERC RAID adapters (total of four channels) and only two shared
storage systems, you may want to connect one storage system to each controller. If you remove the
cable connections, you must reconnect the cables as they were previously connected. To ensure that
the cables are reconnected correctly, Dell recommends that you tag or color-code the cables.
Figure 2-3. Cabling Two PowerVault 22xS Storage Systems to a PERC RAID adapter
VHDCI (channels 0
and 1)
PERC RAID
adapter
PERC RAID adapter
channel 0
channel 1
20
Cabling Your Cluster Hardware
68-pin connectors (2)
PERC RAID adapter
SCSI connections from
channel 1 on each
PERC RAID adapter
68-pin connectors (2)