Replacing a Host I/O Board or Host I/O Module 10–3
Hitachi Unified Storage Hardware Service Guide
Replacing a Host I/O Board on CBXSS/CBXSL/CBSS/CBSL
Controller Boxes
To replace a Host I/O Board on CBXSS/CBXSL/CBSS/CBSL Controller Boxes:
1. Remove the host connector from the Host I/O Board to be removed.
2. Loosen the two blue screws that secure the Host I/O Board.
3. Pull out and remove the Host I/O Board.
4. Place the removed Host I/O Board and host connector in a temporary
location where anti-static measures are observed.
5. Wait at least 30 seconds, and then install the new Host I/O Board. If you
insert the Host I/O Board without waiting at least 30 seconds, the
controller might not recover normally. If this occurs, remove the inserted
Host I/O Board from the storage system, wait at least 30 seconds and
then re-insert it into the storage system.
6. Remove the host connector on the new Host I/O Board.
7. Insert and push the new Host I/O Board into the slot on the controller.
8. Push the levers at the same time in the direction shown by the arrows
(
←⎯) at the same time. Otherwise, the replacement part might not
recover and you will have to repeat the replacement procedure.
9. Tighten the two blue screws to secure the Host I/O Board.
10.Install the host connector on the Host I/O Board.
11.Be sure the red STATUS LED on the Host I/O Module goes OFF and the
orange WARNING LED on the front side of the Controller Box is OFF.
12.Be sure the orange WARNING LED on the front side of the Controller
Box is OFF. If it blinks slowly, visit the HDS Support Portal at
portal.hds.com. The controller usually recovers in about three minutes;
however, if the I/O load from the host computer is high, it may take
about 30 minutes to recover.
13.Connect all the cables you removed.
14.Confirm that the green READY LED on the front of the Controller Box is
ON. This LED might blink quickly for 30-to-50 minutes before it goes ON.
If this LED blinks slowly, visit the HDS Support Portal at portal.hds.com.
15.In Hitachi Storage Navigator Modular 2, check the recovery after
replacing components (see Checking recovery after replacing
components on page 3-14).
NOTE: Although the red ALM LED might be ON when you insert the Host
I/O Board, it goes OFF after the controller recovers.
NOTE: When connecting Fibre Channel interface cables, insert the cables
until they are securely connected to the host connectors. If the Fibre
Channel interface cables are inserted half way into the host connectors, the
controller detects Fibre Channel failures and I/O processing can deteriorate
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