https://community.hpe.com/t5/disk-enclosures/va7400-cache/m-p/3818773#M20878 Hello:<BR /><BR /> My VA7400 has 512 Mb of cache in both controllers. We see all the disks through the same controller so I have some doubts about if the cache of the other controller is being used. Armperf shows that 45056 kb are allocated to read and 180224 kb are allocated to write. <BR />First question, I know there should be some overhead due to maps and things like that but in this case we will only use a 25% memory to cache IO access. Are we really using the memory of both controllers?<BR />Second question, write cache is mirrored so which is the actual size of the mirror cache 90000Kb?<BR /><BR />If anyone with an VA7400 with 1Gb of memory and using both controllers would post an armperf here it would be very helpful.<BR /><BR />Regards<BR /> Thu, 06 Jul 2006 11:32:08 GMT Mario_88 2006-07-06T11:32:08Z https://community.hpe.com/t5/disk-enclosures/va7400-cache/m-p/3818773#M20878 Hello:<BR /><BR /> My VA7400 has 512 Mb of cache in both controllers. We see all the disks through the same controller so I have some doubts about if the cache of the other controller is being used. Armperf shows that 45056 kb are allocated to read and 180224 kb are allocated to write. <BR />First question, I know there should be some overhead due to maps and things like that but in this case we will only use a 25% memory to cache IO access. Are we really using the memory of both controllers?<BR />Second question, write cache is mirrored so which is the actual size of the mirror cache 90000Kb?<BR /><BR />If anyone with an VA7400 with 1Gb of memory and using both controllers would post an armperf here it would be very helpful.<BR /><BR />Regards<BR /> Thu, 06 Jul 2006 11:32:08 GMT https://community.hpe.com/t5/disk-enclosures/va7400-cache/m-p/3818773#M20878 Mario_88 2006-07-06T11:32:08Z