HP StorageWorks 20 - Modular Smart Array Spezifikationen Seite 38

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Seitenansicht 37
Component
Hot-pluggable Non- hot-pluggable
Redundant power supply module
X
Redundant fan module
X
MSA array controller
nl
(dual–controller congurations)
X*
2–Port Ethernet iSCSI module
nl
(dual–controller congurations)
X*
SCSI I/O module
X
MSA chassis
X
MSA array controller (single–controller
congurations)
X
2–Port Ethernet iSCSI module
nl
(single–controller congurations)
X
MSA array controller (single–controller
congurations)
X
* Before remo
ving one of the two controllers or 2-Port Ethernet iSCSI modules in an operational,
dual-controller MSA, the controller being removed must rst be disabled. For more information, see Replacing
the controller, controller cache, or controller battery .
Powering off and powering on the MSA
NOTE:
To restart (
power cycle) the MSA, follow the procedures to power off and then power on the array.
Powering off the MSA
NOTE:
System power to the MSA array does not completely shut off with the Power on/Standby button. In
Standby mode, power is removed from most of the electronics and components, but portions of the
power supply and some internal circuitry remain active. To completely remove power from the system,
disconnect all power cords from the device.
IMPORTANT:
It is critical to shut down the MSA array before the hard drive enclosures, to ensure that all I/O activity to
the hard d
rivesisceasedbeforepoweringofftheharddriveenclosure.
To remove power from the MSA, do the following:
1. Schedule a maintenance window.
2. Ensure that a known good backup is available.
3. Power down all servers with access to the MSA, or if your operating system fully supports it, quiesce
all I/O and dismount all LUNs.
4. On the MSA, press and hold down the Power on/Standby button on the front of the chassis for
approximately ve seconds to place the MSA array in Standby mode.
38
Customer replaceable components
Seitenansicht 37
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