High-Density Expansion Unit Top View - Hitachi AMS 2100 Hardware Manual

Item




High-density expansion unit top view

Figure 4-35
drive cover removed. The disk drives and ENC cards can be seen, along with
the drive fillers where disk drives are not installed. These are required to
prevent loss of cooling air to the drives.
Item

Power Supply Area

ENC Unit (four required)
4–42
Table 4-34: ENC Connectors
Description
ENC Port (IN). Connects to the
OUT port on either the base unit
controller the IN port on the
ENC unit in an expansion unit or
high-density expansion unit.
Lock Lever
ENC Port (OUT). Connects to IN on either the controller on a base unit or the
IN port on the ENC unit in an expansion unit or high-density expansion unit.
shows the top view of high-density expansion unit with the
Figure 4-35: High-density Expansion Unit Top View
Table 4-35: High-density Expansion Unit Top View
Description
Hardware components
Hitachi AMS 2100/2300 Storage System Hardware Guide
Item Description
ALM (alarm) LED

indicates that the ENC unit has
failed.
LOC (locate) LED

See Table 4-25 on page
Item Description
Disk Drive Filler (must be in all slots

that do not have disk drives
installed.)
Disk Drive. See Disk Drive

Configurations following this table.
(red) This LED
(orange)
4-32.