HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Maintenance and Service Guide (EK-G80MS-SA. C01, March 2005)

Replacing BA370, M2100 & M2200 Enclosure Elements
149HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
Replacing an ECB
The ECB can be replaced with subsystem power on or off.
Note: HP recommends that you replace the ECB once every 3 ½ years.
A dual ECB (for and HP StorageWorks RA8000) is shown in Figure 60 and
contains two batteries. A single ECB contains only one battery.
Figure 60: Dual ECB configuration (RA8000 and BA370 example shown)
Model 2100 and 2200 enclosures contain four ECB bays. Two bays support cache
module A (A1 and A2) and two bays support cache module B (B1 and B2)—see
the relationship in Figure 61 on page 150. When replacing an ECB (see Figure 63
on page 150), match the vacant ECB bay with the cache module the ECB
supports.
Note: If you plan to shut down your subsystem for more than one day to replace the
ECB, HP recommends that you shut down your subsystem. See the “Shutting down the
subsystem” section that starts on page 102 for details.
1 Battery disable switch
(shut off)
2 Status LED
3 ECB Y-cable
4 Faceplate and controls
for second battery
(dual ECB
configuration only)
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