https://community.hpe.com/t5/disk-enclosures/eva-controllers/m-p/4023744#M24077 To keep the data in the cache if a power outage occurs, so unflushed data to disks won't be lost. This is because the data is stored in the cache and written to disk at regular intervals, for increased performance. Wed, 20 Jun 2007 11:03:13 GMT Ivan Ferreira 2007-06-20T11:03:13Z https://community.hpe.com/t5/disk-enclosures/eva-controllers/m-p/4023743#M24076 What is the function of the controller's batteries? Wed, 20 Jun 2007 10:54:25 GMT https://community.hpe.com/t5/disk-enclosures/eva-controllers/m-p/4023743#M24076 Feljav 2007-06-20T10:54:25Z https://community.hpe.com/t5/disk-enclosures/eva-controllers/m-p/4023744#M24077 To keep the data in the cache if a power outage occurs, so unflushed data to disks won't be lost. This is because the data is stored in the cache and written to disk at regular intervals, for increased performance. Wed, 20 Jun 2007 11:03:13 GMT https://community.hpe.com/t5/disk-enclosures/eva-controllers/m-p/4023744#M24077 Ivan Ferreira 2007-06-20T11:03:13Z