RA8000 and ESA12000 Storage Subsystems
2–52
387404–001
EK–SMCPR–UG. A01
2.5
Installing SBBs
This section describes the procedures for installing Storage Building Blocks (SBBs) into a
BA370 rack mountable enclosure. The SBB can contain disk drives, power supplies, and
the external cache battery.
2.5.1 Installing Disk Drive SBBs
Initial and additional disk drive SBBs may be installed into the BA370 rack-mountable
enclosure. The recommended procedure for installing disk drive SBBs is to install them
into the enclosure bottom to top and from left to right as viewed from the front of the
enclosure. Refer to Section 5.7.4 in Chapter 5 of this guide for specific disk drive SBB
installation instructions.
Before beginning the disk drive SBB installation process, group the SBBs according to
capacity. If there is more than one BA370 enclosure involved, divide each of the groups
by total number of BA370 rack mountable enclosures. Now distribute the disks (by
capacity) amongst the BA370s. The goal is to spread the disks across the BA370s to
ensure that a raidset is not all on one BA370. It is not necessary to favor the master
BA370 [the one with the array controller(s)] over the expansion enclosure(s).
Example:
DISK TYPE
TOTAL NUMBER
OF DISKS BY
TYPE
NUMBER OF
DISKS IN
MASTER
NUMBER OF
DISKS IN
EXPANSION
RZ1DB, 18GB, WIDE Ultra
18
4
5
RZ1CB, 9GB, WIDE Ultra
9
3
2
RZ1BB, 4GB, WIDE Ultra
4
1
2
To install an disk drive SBB, hold it in both hands, insert the disk drive into the
designated guide slots and firmly push the disk drive into the shelf until the mounting tabs
snap into place.