9–2
Replacing cache memory
Hitachi Unified Storage Hardware Service Guide
Precautions when replacing cache memory
Observe the following guidelines when replacing cache memory.
• The CBXSS/CBXSL/CBXX/CBSL and CBL use different cache memory
modules. When replacing cache memory, be sure to use the
appropriate module for the Hitachi Unified Storage system.
• Insert the new cache memory in the slot number appropriate for the
cache memory being replaced.
• Complete the cache replacement within 10 minutes. Otherwise, an
abnormal rise in temperature can power off the storage system.
• To replace cache memory, you must remove the controller where the
faulty cache memory is installed. Before removing the controller, bock it
to place it out of service.
• When replacing cache memory, the new cache memory must be the
same capacity as the cache memory being replaced.
• If you replace a controller while the storage system is formatting a
volume, the time it takes to restore the new controller might be
delayed until the volume-formatting operation completes.
• To replace cache, you must remove the storage system controller. For
storage systems that have the Power Saving/Power Saving Plus option,
removing and inserting a controller during drive spin-up might prevent
the controller from recovering fully. If this occurs, wait for all the drives
to spin up, and then remove the controller from the storage system,
wait at least 30 seconds, and reinsert it.
Replacing cache on CBXSS/CBXSL/CBSS/CBSL Controller
Boxes
To replace cache on CBXSS/CBXSL/CBSS/CBSL Controller Boxes:
1. Be sure the red ALM LED is ON at the controller whose cache memory
you want to replace. If it is not ON, visit the HDS Support Portal at
2. Loosen the right and left blue screws.
3. Open the right and left levers forward.
4. Remove all the cables connected to the controller. If the Drive Box is
connected, remove the SAS (ENC) cable.
NOTE: You cannot replace two cache backup batteries on the CBSL/CBSS/
CBXSL/CBXSS at the same time when the storage system is powered on
(Ready status). You can replace two cache backup batteries on the CBL
while the storage system is operating; however, the cache switches to
write-through mode and read/write performance degrades slightly.
Содержание CBL
Страница 12: ...xii Hitachi Unified Storage Hardware Service Guide Serial Numbers Hitachi Unified Storage Models 110 and 130 ...
Страница 13: ...xiii Hitachi Unified Storage Hardware Service Guide Labels on the CBXSS Either a or b is affixed ...
Страница 14: ...xiv Hitachi Unified Storage Hardware Service Guide Labels on the CBXSL Either a or b is affixed a b ...
Страница 15: ...xv Hitachi Unified Storage Hardware Service Guide Labels on the CBSS Either a or b is affixed a b ...
Страница 16: ...xvi Hitachi Unified Storage Hardware Service Guide Labels on the CBSL Either a or b is affixed a b ...
Страница 17: ...xvii Hitachi Unified Storage Hardware Service Guide Labels on the CBL CBLE CBLD Either a or b is affixed a b ...
Страница 18: ...xviii Hitachi Unified Storage Hardware Service Guide Labels on the DBS DBSD Either a or b is affixed a b ...
Страница 19: ...xix Hitachi Unified Storage Hardware Service Guide Labels on the DBL DBLD Either a or b is affixed a b ...
Страница 20: ...xx Hitachi Unified Storage Hardware Service Guide Labels on the CBXSS ...
Страница 21: ...xxi Hitachi Unified Storage Hardware Service Guide Labels on the DBF Either a or b is affixed a b ...
Страница 22: ...xxii Hitachi Unified Storage Hardware Service Guide Labels on the DBX Either a or b is affixed kg a b a b ...
Страница 23: ...xxiii Hitachi Unified Storage Hardware Service Guide Labels on front of the DBW added on April 2014 ...
Страница 25: ...xxv Hitachi Unified Storage Hardware Service Guide Labels on rear of the DBW added on April 2014 ...
Страница 28: ...xxviii Hitachi Unified Storage Hardware Service Guide DBX DBW Labels on cache backup battery CBL CBLE CBLD ...
Страница 30: ...xxx Hitachi Unified Storage Hardware Service Guide CBL CBLE CBLD DBS DBSD DBL DBLD DBF ...
Страница 35: ...xxxv Hitachi Unified Storage Hardware Service Guide Labels on Management Module CBL CBLE CBLD LAN UPS ...
Страница 36: ...xxxvi Hitachi Unified Storage Hardware Service Guide Labels on I O Module ENC DBS DBSD DBL DBLD DBF ...
Страница 37: ...xxxvii Hitachi Unified Storage Hardware Service Guide DBW Labels on I O Card ENC DBX Labels on Host Connector ...
Страница 38: ...xxxviii Hitachi Unified Storage Hardware Service Guide Labels on SAS ENC Cable Labels on cable holder DBX In ...
Страница 39: ...xxxix Hitachi Unified Storage Hardware Service Guide Out ...
Страница 40: ...xl Hitachi Unified Storage Hardware Service Guide ...
Страница 126: ...3 8 Procedures before and after replacing components Hitachi Unified Storage Hardware Service Guide ...
Страница 152: ...5 8 Replacing a cache backup battery Hitachi Unified Storage Hardware Service Guide ...
Страница 156: ...6 4 Replacing a Fan Module Hitachi Unified Storage Hardware Service Guide ...
Страница 180: ...8 16 Adding and replacing controllers Hitachi Unified Storage Hardware Service Guide ...
Страница 188: ...9 8 Replacing cache memory Hitachi Unified Storage Hardware Service Guide ...
Страница 200: ...11 6 Replacing the Host connector Hitachi Unified Storage Hardware Service Guide ...
Страница 204: ...12 4 Replacing the Drive I O Module Hitachi Unified Storage Hardware Service Guide ...
Страница 212: ...14 4 Replacing the SAS ENC cable Hitachi Unified Storage Hardware Service Guide ...
Страница 274: ...17 14 Troubleshooting Hitachi Unified Storage Hardware Service Guide ...
Страница 286: ...Glossary 12 Hitachi Unified Storage Hardware Service Guide A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Страница 290: ...Index 4 Hitachi Unified Storage Hardware Service Guide U Upgrading Hitachi Unified Storage 130 15 1 ...
Страница 291: ...1 Hitachi Unified Storage Hardware Service Guide ...