HP 50 Modular Smart Array - Manual (Page 14)

14 HP StorageWorks Modular Smart Array 50 Storage Enclosure User Guide
Power down the storage enclosure
CAUTION: In systems that use external data storage, be sure that
the server is the first unit to be powered down and the last to be
powered back up. Taking this precaution ensures that the system does
not erroneously mark the drives as failed when the server is powered
up.
IMPORTANT: If installing a hot-plug device, it is not necessary to
power down the storage enclosure.
1.
Power down any attached servers. Refer to the server documentation.
2.
Press the Power On/Standby button on the storage enclosure. Wait for the
system power LED to go from green to amber.
3.
Disconnect the power cords.
The system is now without power.