Identifying and locating the faulted 2U DPE
Before you replace a faulted 2U DPE , you must locate its placement within the
storage system by using Unisphere.
Using Unisphere, locate the faulted 2U DPE in the enclosure.
Procedure
1. In Unisphere, select System View.
2. Select the Enclosures page.
Select the DPE in the Enclosure dropdown menu and select the Front view of
the enclosure. Locate the new DPE shown in this enclosure view.
3. Locate the faulted 2U DPE marked orange and displayed in the Enclosure view
shown.
Figure 1 Faulted 25-drive DPE - example
Shutting down the enclosure
This system shut down or power down process involves placing both SPs into Service
mode before eventually disconnecting the power cords for the power supplies. When
all SPs are down, all I/O services stop and hosts lose access to the system.
It is recommended that you disconnect all network shares, LUNs, and VMware
datastores from each host to prevent data loss. When the system is fully powered on,
you can reconnect the hosts to these storage resources.
Use the procedure that follows to place both SPs into Service mode to safely stop all
system processes before you replace the faulted DPE.
See the
DC-Powered Unity Enclosures: Installation and operation guide
for instructions
on how to power down and power up a DC powered system (physical deployments
only).
Procedure
1. Collect and record site and system details:
Immediately upon booting the SPs in the replacement enclosure you may need
to contact EMC Remote Support to perform certain steps that require root
access to the system.
Replacing a faulted 2U DPE
Identifying and locating the faulted 2U DPE 9
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