• Observe applicable/conventional ESD precautions when handling modules and components, as described in Before
you begin. Avoid contact with midplane components, module connectors, leads, pins, and exposed circuitry.
Firmware updates
After installing the hardware and powering on the storage system components for the first time, verify that the controller modules,
expansion modules, and disk drives are using the current firmware release. Periodically, ensure that the firmware versions used in the
enclosure modules are compatible.
Configuring partner firmware update
In a dual-controller system in which partner firmware update (PFU) is enabled, when you update firmware on one controller, the system
automatically updates the partner controller. Disable PFU only if requested by a service technician. Use the ME Storage Manager or CLI to
change the PFU setting.
NOTE:
• See the topic about updating firmware in the
Dell EMC PowerVault ME4 Series Storage System Administrator’s
Guide
before performing a firmware update.
• The ME Storage Manager and CLI provide an option for enabling or disabling PFU for the partner controller as
described in the
Dell EMC PowerVault ME4 Series Storage System Administrator’s Guide
. To enable or disable the
setting via the CLI, use the set advanced-settings command, and set the partner-firmware-upgrade parameter. See
the
Dell EMC PowerVault ME4 Series Storage System CLI Guide
for more information about command parameter
syntax.
Continuous operation during replacement
Your hardware or software enclosure management application determines the capability for replacing a failed disk without the loss of
access to any file system on the enclosure. Enclosure access and use during this period is uninterrupted. If an enclosure is equipped with
redundant PCMs or PSU, sufficient power is provided to the system while the faulty module is replaced.
NOTE:
ME4 Series Storage System enclosures support hot-plug replacement of redundant controller modules, power
supplies, and expansion modules. Hot-add replacement of expansion enclosures is also supported.
Shutting down attached hosts
To replace modules in a 2U controller enclosure that has one controller module, you must shut down all of the attached hosts before
shutting down the controller module.
To replace the sideplane in a 5U84 enclosure, you must shut down all of the attached hosts before shutting down the controller modules.
CAUTION:
The sideplanes on the enclosure drawers are not hot swappable or customer serviceable.
Shutting down a controller module
Shutting down the controller module in an enclosure ensures that a proper failover sequence is used, which includes stopping all I/O
operations and writing any data in write cache to disk. Perform a shut down before you remove a controller module from an enclosure, or
before you power off an enclosure for maintenance, repair, or a move.
Using the ME Storage Manager
1. Sign-in to the ME Storage Manager.
2. In the System panel in the banner, click Restart System.
The Controller Restart and Shut Down panel opens.
3. Select the Shut Down operation, which automatically selects the controller type Storage.
4. Select the controller module to shut down: A, B, or both.
5. Click OK. A confirmation panel appears.
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Module removal and replacement
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