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20 Operating Your Storage Enclosure
drives that are controlled by each enclosure management module (EMM)
in a split-mode configuration. See Figure 2-4 for a cabling diagram of a
split-mode configuration.
NOTE: Clustering is not supported on PowerVault MD1200 and
PowerVault M1220 enclosures.
The operating mode is selected using the enclosure mode switch on the front
panel of the enclosure.
NOTE: The enclosure mode switch must be set to either unified mode or split mode
before the enclosure is turned on. Changing the configuration mode after turning on
the enclosure has no effect on the enclosure configuration until the enclosure
is rebooted.
Connecting the Enclosure
1
Ensure that the latest version of Dell OpenManage™ Server Administrator
is installed. For installation instructions and supported operating systems,
see the Server Administrator documentation.
NOTE: The minimum version of Server Administrator supported on your
enclosure is 6.2.
2
Turn off the host system and all attached devices.
3
Connect the SAS cable(s) to the EMM SAS connector on the storage
enclosure
and to the RAID controller on the host system. Push the cable
into the connector until it clicks into place. See Figure 2-1.
NOTE: Connectors on both ends of the SAS cable are universally keyed. You
can connect either end of the cable to the EMM or the RAID controller.
NOTE: To remove the SAS cable, you must pull the pull-tab to release the
cable from the connector on the EMM and the host system. See Figure 2-1.
Table 2-1. Split-Mode Configuration
Enclosure EMM 0 EMM 1
Dell PowerVault MD1200 Drives 6 to 11 Drives 0 to 5
Dell PowerVault MD1220 Drives 12 to 23 Drives 0 to 11
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