Each PCB assembly contains two Drawer Sideplane cards. One Sideplane card
mounts on the right side of the disk drawer, while the other card mounts on the left
side of the drawer.
Drawer Sideplane cards provide power paths to the drawer Baseplanes and the
DDICs and their installed disk drives. Sideplane cards also provide 12Gb/s SAS
connections.
Sideplane cards are hot swappable and replaceable by service personnel while the
storage shelf is running in a rack.
Note: Removing the Sideplane upper metal cover removes power to the Sideplane,
which enables the faulty Sideplane to be hot-swapped.
Figure 2-8
Inside and outside views of a right side Sideplane card
Three Drawer Baseplanes comprise each PCB assembly. Drawer Baseplanes
provide a dual path for 12Gb/s SAS connectivity between the Drawer Sideplane
cards and the DDICs. They also provide power to the DDICs from either the right
or the left Drawer Sideplane cards.
The Drawer Baseplanes also provide four remote temperature sensing diodes that
monitor disk drive temperatures within the disk drive drawers.
49About the Veritas 5U84 Storage Shelves
About Veritas 5340 Appliance storage shelves
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