https://community.hpe.com/t5/hpe-proliant-servers-ml-dl-sl/extend-a-4-disk-raid-1-0-array-on-ml350p-gen8-p420i-with-2-disks/m-p/6944517#M156580 <P>Do you have LFF or SFF drives? The controller supports a maximum of eigth drives conencted (without expander). SFF drive cage can handle 8 drives, LFF cage a maximum of 6 drives. In any case you can of course add 2 drives to a 4-drive configuration.</P><P>To expand the raid array you need a cache module with battery backup</P> Wed, 01 Mar 2017 10:16:26 GMT Fritsch James 2017-03-01T10:16:26Z https://community.hpe.com/t5/hpe-proliant-servers-ml-dl-sl/extend-a-4-disk-raid-1-0-array-on-ml350p-gen8-p420i-with-2-disks/m-p/6941008#M156465 <P>Is it possible to extend an RAID 1+0 array of a ML350P gen8 with a P420i with 2 disks?</P><P>The array now consists of 4&nbsp;disks.</P> Fri, 17 Feb 2017 07:59:20 GMT https://community.hpe.com/t5/hpe-proliant-servers-ml-dl-sl/extend-a-4-disk-raid-1-0-array-on-ml350p-gen8-p420i-with-2-disks/m-p/6941008#M156465 knifto 2017-02-17T07:59:20Z https://community.hpe.com/t5/hpe-proliant-servers-ml-dl-sl/extend-a-4-disk-raid-1-0-array-on-ml350p-gen8-p420i-with-2-disks/m-p/6944517#M156580 <P>Do you have LFF or SFF drives? The controller supports a maximum of eigth drives conencted (without expander). SFF drive cage can handle 8 drives, LFF cage a maximum of 6 drives. In any case you can of course add 2 drives to a 4-drive configuration.</P><P>To expand the raid array you need a cache module with battery backup</P> Wed, 01 Mar 2017 10:16:26 GMT https://community.hpe.com/t5/hpe-proliant-servers-ml-dl-sl/extend-a-4-disk-raid-1-0-array-on-ml350p-gen8-p420i-with-2-disks/m-p/6944517#M156580 Fritsch James 2017-03-01T10:16:26Z