topic Re: RAID Groups and Aggregates - Noob in ONTAP Discussions https://community.netapp.com/t5/ONTAP-Discussions/RAID-Groups-and-Aggregates-Noob/m-p/22035#M5174 <HTML><HEAD></HEAD><BODY><P>Which version of ONTAP are you on?&nbsp; If not 8.1 then you have to match the aggr type (32 or 64) to the source.&nbsp; If 8.1, then you can mirror 32 to 64 though.&nbsp; The default raid group size for sata is 14 but that can be increased to 20 (and a hidden option to go to 22 which was posted on another community discussion).&nbsp; </P><P></P><P>At a minimum you will need two raid groups with 27 drives anyway, so you can choose a new aggregate or add to the existing aggregate (but need to be on 8.1 which can convert 32 to 64 when growing over 16TB).&nbsp; If you are on 8.0 or lower, then you likely would just create a new aggregate since you can't convert 32 to 64 without 8.1... or possibly wait to add the drives until you upgrade to 8.1.</P></BODY></HTML> Tue, 10 Jul 2012 19:17:22 GMT scottgelb 2012-07-10T19:17:22Z RAID Groups and Aggregates - Noob https://community.netapp.com/t5/ONTAP-Discussions/RAID-Groups-and-Aggregates-Noob/m-p/22029#M5172 <HTML><HEAD></HEAD><BODY><P>Hi peeps,</P><P></P><P>Im still trying to understand RAID groups and how many disks we can and should fit into one. We have a 2040 HA Pair.</P><P></P><P>We currently have a SATA Tray (DS14MK2) with 14 1TB Disks arranged in 1 aggregate. 11 Disks with 2 parity and one spare. The RAID group was set to 14 (before I started).</P><P></P><P>We have a new shelf , the same DS14MK2 that I see can be added in two ways. The Shelf is primarily going to be used for snapmirror volumes from a DR site.</P><P></P><P>1)Assign disks to one of the two controllers</P><P>-create new aggregate</P><P></P><P></P><P>2)Assign disks to one of the two controllers</P><P>-add disks to existing aggregate</P><P></P><P>My questions center around the fact that the existing aggregate is 32bit, it is well under the 16TB limt (usable of around 8TB) so Can I add these new disks to this aggregate based on the RAID group size of 14.</P><P>thinking just adding, I won't need a spare as there is already one in the 1st shelf.</P><P></P><P>can we add all disks of this new shelf?</P><P></P><P>Should we upgrade our aggregate first to 64Bit, then add the disks?</P><P></P><P>Any help much appreciated.....</P></BODY></HTML> Thu, 05 Jun 2025 06:23:04 GMT https://community.netapp.com/t5/ONTAP-Discussions/RAID-Groups-and-Aggregates-Noob/m-p/22029#M5172 londonitsupport 2025-06-05T06:23:04Z Re: RAID Groups and Aggregates - Noob https://community.netapp.com/t5/ONTAP-Discussions/RAID-Groups-and-Aggregates-Noob/m-p/22035#M5174 <HTML><HEAD></HEAD><BODY><P>Which version of ONTAP are you on?&nbsp; If not 8.1 then you have to match the aggr type (32 or 64) to the source.&nbsp; If 8.1, then you can mirror 32 to 64 though.&nbsp; The default raid group size for sata is 14 but that can be increased to 20 (and a hidden option to go to 22 which was posted on another community discussion).&nbsp; </P><P></P><P>At a minimum you will need two raid groups with 27 drives anyway, so you can choose a new aggregate or add to the existing aggregate (but need to be on 8.1 which can convert 32 to 64 when growing over 16TB).&nbsp; If you are on 8.0 or lower, then you likely would just create a new aggregate since you can't convert 32 to 64 without 8.1... or possibly wait to add the drives until you upgrade to 8.1.</P></BODY></HTML> Tue, 10 Jul 2012 19:17:22 GMT https://community.netapp.com/t5/ONTAP-Discussions/RAID-Groups-and-Aggregates-Noob/m-p/22035#M5174 scottgelb 2012-07-10T19:17:22Z