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Cache bat tery

Two cache batteries provide ba ckup power to maintain the contents of the controller cache when AC

power is lost and the storage system has not been shutdown properly. When fully charged the batteries

can sustain the ca che contents for to 96 hours. The bat teries are located behind the OCP.

Each battery in

cludes an amber status indicator which will b e on if the battery fails. If the status indicator

is on, the batter y should be replaced as soon as possible.

HSV controller cabling

All data cables and power cables attach to the rear of the controller. Adjacent to each data connector is

a two-colored link status indicator. Table 23 identiﬁes the status conditions presented by these indicators.

NOTE:

These indicators do not indicate whether there is communication on the link, only whether the link

can transmit and receive data.

The data connections are the interfaces to the disk drive enclosures or loop switches (depending on your

conﬁguration), the other controller, and the fabric. Fiber optic cables link the c ontrollers to the fabric,

and, if an expansion cabinet is part of the conﬁguration, link the expansion cabinet drive enclosures to

the loop switches in the main cabinet. Copper cables are used between the controllers (mirror port) and

between the controllers and the drive enclosures or loop switches.

Racks

All storage system components are mounted in a rack. Each conﬁguration includes two controller

enclosures (the controller pair), drive enclosures, FC loop switches (if required), and an expansion

bulkhead. Each controller pair and all the associated drive enclosures form a single stora ge system.

Rack conﬁgurations

Each system conﬁg uration depends on the number of disk enclosures included in the storage system. For

more information about racks and conﬁgurations, including expansion and interconnection, refer to the

HP StorageWorks Enterprise Virtual Array hardware conﬁguration guide.

Power d istribution

AC power is distributed to the rack through a dual Power Distribution Unit (PDU) assembly mounted at the

bottom rear of the rack. The characteristics of the fully-redundant rack power c onﬁguration are as follows:

• Each PDU is connected to a separate circuit breaker-protected, 30–A AC site power source

(220–240 VAC ±10%, 50 or 60–Hz, ±5%). Figure 24 illustratesthecompatible60–Hzand

50–Hz wall receptacles.

HP StorageWorks 3000/5000 Enterprise Virtual Array user guide (VCS 4.xxx)

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HP EVA3000 Bedienungsanleitung Seite 77