https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276750#M44644 We bought a 4400 two years ago with 28 300GB 15K drives (model no. BF300DA47B). All of them are configured in one disk group. Last week, we bought 8 brand new drives (model no. BF300DAJZQ), with the intention to expand the disk group. These drives have the exact same specs and are listed as EVA-specific drives.<BR /><BR />Should I mix these drives in one disk group? Tue, 15 Mar 2011 14:30:15 GMT Jonathan_K 2011-03-15T14:30:15Z https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276750#M44644 We bought a 4400 two years ago with 28 300GB 15K drives (model no. BF300DA47B). All of them are configured in one disk group. Last week, we bought 8 brand new drives (model no. BF300DAJZQ), with the intention to expand the disk group. These drives have the exact same specs and are listed as EVA-specific drives.<BR /><BR />Should I mix these drives in one disk group? Tue, 15 Mar 2011 14:30:15 GMT https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276750#M44644 Jonathan_K 2011-03-15T14:30:15Z https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276751#M44645 As long as the firmware on the EVA is updated (09522000 at least)...<BR /><BR />You can check the disk compatibilities in this doc:<BR /><BR /><A href="http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02498302/c02498302.pdf" target="_blank">http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02498302/c02498302.pdf</A><BR /><BR />No problem mixing models if they are listed as supported on that table. Tue, 15 Mar 2011 14:43:15 GMT https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276751#M44645 Víctor Cespón 2011-03-15T14:43:15Z https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276752#M44646 Excellent! Thanks, Víctor.<BR />That's just what I was looking for. Tue, 15 Mar 2011 15:01:01 GMT https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276752#M44646 Jonathan_K 2011-03-15T15:01:01Z https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276753#M44647 Problem solved. See above. Tue, 15 Mar 2011 15:01:43 GMT https://community.hpe.com/t5/disk-enclosures/eva-4400-mixing-disk-model-numbers/m-p/5276753#M44647 Jonathan_K 2011-03-15T15:01:43Z