IBM DCS3860, Installation, User'S, And Maintenance Manual

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The DCS3860 has the following removable components. These components, called
field replaceable units (FRUs), are accessible from the front or back of the
enclosure.
v
Five drive drawers, including the right and left cable chains.
v
20 minimum to 60 maximum Disk Drive Modules (DDMs)
v
Two RAID controllers (for the 1813-86C)
v Two environmental service modules (ESMs) (for the 1813-80E)
v
Two power supplies
v Two fan assemblies
You can use the hot-swap features of the DCS3860 to remove and replace DDMs,
power supplies, fan assemblies, ESMs, and RAID controllers without turning off
the enclosure. You can maintain the availability of your system while a hot-swap
device is removed, installed, or replaced.
The EXP3800 expansion unit is designed for use with the DCS3860 storage system.
The DCS3860 storage system can support up to five EXP3800 expansion enclosures
for a total of 360 disk drive modules (DDM).
Drive drawers
The DCS3860 storage system and EXP3800 expansion enclosure have five
removable drive drawers that are accessible from the front of the enclosure. Each
drive drawer can contain up to 12 disk drives (see Figure 3 on page 8). With the
drive drawers fully populated, the DCS3860 can support up to 60 DDMs. (see
Figure 2).
Note: Drive drawers might be referred to as drive trays in other publications.
Drive
drawers
1
2
3
4
5
dcsq0004
!
Figure 2. DCS3860 hot-swap drive drawers
Chapter 1. Introduction
7