https://community.hpe.com/t5/disk-enclosures/ra4000-controller-cache-battery/m-p/3547372#M16207 Can the cache battery be replaced or does it require a new controller? Also, if the battery does reach end of life and die will it adversely affect the read/write performance? We weren't sure if the read/write cache array accelerator would disable itself if it sensed a dead battery backup. Any help would be greatly appreciated.<BR /><BR />Thanks!<BR />Tom Wed, 18 May 2005 13:00:15 GMT Tom Conrady 2005-05-18T13:00:15Z https://community.hpe.com/t5/disk-enclosures/ra4000-controller-cache-battery/m-p/3547372#M16207 Can the cache battery be replaced or does it require a new controller? Also, if the battery does reach end of life and die will it adversely affect the read/write performance? We weren't sure if the read/write cache array accelerator would disable itself if it sensed a dead battery backup. Any help would be greatly appreciated.<BR /><BR />Thanks!<BR />Tom Wed, 18 May 2005 13:00:15 GMT https://community.hpe.com/t5/disk-enclosures/ra4000-controller-cache-battery/m-p/3547372#M16207 Tom Conrady 2005-05-18T13:00:15Z https://community.hpe.com/t5/disk-enclosures/ra4000-controller-cache-battery/m-p/3547373#M16208 You can replace Fibre Channel Array Controller 64-MB Cache Upgrade Kit (262398-B21).<BR />When battery is not fully charged write cache is disabled.<BR />regards,<BR />Andrzej Thu, 19 May 2005 02:46:09 GMT https://community.hpe.com/t5/disk-enclosures/ra4000-controller-cache-battery/m-p/3547373#M16208 Andrzej Kowalik 2005-05-19T02:46:09Z