3PAR InForm® OS 2.2.4 Messages and Operator's Guide (320-200119 Rev A, March 2009)

2.10
Understanding Component Numbering
InForm OS Version 2.2.4
3PAR Confidential
2.3.3.1 Magnetek Battery Backup Units
Magnetek BBUs have batteries that sit vertically, with battery A above battery B. (Figure 2-10).
Figure 2-10. Magnetek Battery Backup Units Have Batteries That Sit Vertically
When facing the rear of the storage server, Magnetek BBUs are numbered from right to left, 0
through 3. When two battery trays are present, the upper tray is numbered 0 and the lower
tray is numbered 1 (Figure 2-11).
Table 2-2. Number of BBUs and Battery Tray Placement by Storage Server Backplane and Number of Controller
Nodes
Backplane Nodes BBU Battery Trays Tray Placement
T400 2 2 1 Below backplane
4 4 1 Below backplane
T800 2 2 1 Below backplane
4 4 1 Below backplane
6 6 2 Below backplane (1)
Above backplane (1)
8 8 2 Below backplane (1)
Above backplane (1)
0217_L_R1
Battery Tray (Rear)
Magnetek BBU
with Two (2)
Batteries (A and B)
Battery Tray Holds Four (4) BBUs
A
B