About The Standby On/Off Button - Dell EqualLogic PS4100 Hardware Maintenance Manual

PS4100 Hardware Maintenance Guide
• Do not leave a control module slot empty. In an array with one control module, always attach a blank
face plate to the empty control module slot.
• Store control modules properly. Store a control module in its original packaging or in an anti-static
bag or place the control module on a surface protected from electrostatic discharge.

About the Standby On/Off Button

The Type 12 control module has a small, recessed button labeled Standby ON/OFF (see
button is recessed to prevent accidental activation.
Enabling the Standby Feature
To use the standby button, a group administrator must enable the feature in the Group Manager GUI or CLI.
Enabling the use of the button applies group-wide; that is, it allows you to press the button to shut down any
member (array) that has the button (currently, PS4100 and PS6100 array models only). You do not need to
enable use of the button on each member separately.
Note: Only a user with group administrator privileges can enable the standby feature on the group.
However, anyone can press the button, and the group cannot determine who put the array into standby on/
off mode. Therefore, group administrators should consider their environment's security concerns before
enabling this feature.
Using the Standby Button
After the feature is enabled group-wide, you can use the Standby On/Off button on either control module of
any applicable member to shut down the array quickly without using the Group Manager GUI or CLI.
You must press in and hold the Standby On/Off button for at least two (2) seconds to shut down the member
to the standby state.
(To fully shut down the array, turn off the switches on the power supply and cooling modules.)
To turn the member back on, press and hold the Standby On/Off button again (if the power supply switches
are turned on).
Important Considerations
Use this button only in when you must shut down a member fast, in situations where you do not have access
to the Group Manager GUI or CLI.
Caution: In standby mode, any volumes that use space on that member or that are bound to that
member become unavailable!
Figure 15 Standby Button Location
Maintaining Control Modules
Figure 15). The
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