High-Density Expansion Unit Enc Card - Hitachi AMS 2100 Hardware Manual

High-density expansion unit ENC card

As shown in
in the disk drive area of the high-density expansion unit. The ENC cards are
the interfaces between the high-density expansion unit in which they are
mounted and the controller in a base unit or the ENC unit in a standard
expansion unit or another high-density expansion unit. Each ENC card has
a LOC (locate) LED and an ALM (alarm) LED. They are described in the table
below the following figure. The ENC card is shown in the following figure.
The upper photograph shows the top edge view of the ENC card, with an
expanded view of the status LEDS.
Table 4-37: High-density Expansion Unit ENC Unit
Item

Lock Lever

Status LEDs
Figure 4-35 on page
Figure 4-38: High-density Expansion Unit ENC Unit
Secures the ENC unit in the chassis.
Alarm
This LED indicates that the ENC unit has failed.
(red)
OFF
Blinking
6 (slow)
1
1 (fast)
2 (fast)
LOCATE
3 (fast)
(orange)
4 (fast)
6 (slow)
ON
Hardware components
Hitachi AMS 2100/2300 Storage System Hardware Guide
4-42, four ENC units (cards) are mounted
Description
Normal operation
Voltage on the control unit is abnormal. (Reset of the
control unit is not canceled)
SRAM error.
ENC hard error.
Firmware error in flash memory.
CUDG error in ENC.
Voltage on the control unit is abnormal. (Reset of the
control unit is not canceled)
Boot section error in the ENC firmware, a RAM error,
or ENC hard configuration error.
4–45