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Dell PowerVault 20xS Storage Systems Enclosure Services Expander Module Installation 1-3
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1. Turn off the storage system.
2. Disconnect the storage system from its power source(s).
3. Disconnect any communications cables.
4. Wear a wrist grounding strap, and clip it to an unpainted metal surface,
such as a part of the back panel, on the chassis. If a wrist grounding strap is
not available, touch the fan guard or some other unpainted metal surface
on the back of the chassis to discharge any static charge from your body.
NOTES: Two enclosure services expander modules are required for cluster operation.
When you configure the enclosure services expander modules using the forced
joined mode for cluster operation, the storage system cannot operate in a
split-backplane (2 x 4) configuration when two cables are attached.
To configure the enclosure services expander modules for cluster operation, perform
the following steps:
1. Locate the two-pin jumper labeled “FORCED JOINED JP8” on the enclosure
services expander module (see Figure 1-1).
The enclosure services expander module is shipped with a jumper plug that is
connected to only one pin of the jumper.
2. Move the jumper plug to connect the two pins of the FORCED JOINED JP8
jumper.
3. Repeat steps 1 and 2 for the second enclosure services expander module.
4. Install the two enclosure services expander modules into the PowerVault 20
x
S
storage system.
See “Installing the Enclosure Services Expander Module” found later in this
document.