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New 8Tb drives in a NetGear ReadyNAS 316
Hi guys, looking for some help. I have the Netgear ReadyNAS 316 (Firmware 6.8.1), I have 4 x 4Tb drives (Western Digital RED WD40EFRX-68TW0N0) installed from Bay 3 to Bay 6 in a RAID 10 Configura...
I tried in the Netgear RAID Calculator and while it's not exactly true that the drives need to be the same space, it will only use an amount from each drive the size of the smallest one. I think that's universally the requirement for RAID10, but wanted to specifically check the Netgear calculator to see there was no exception. Note that the calculator does not take into account the rules of expansion. So while it may appear you can add drives to a RAID10 array, you cannot.
Do you have a compelling reason to use RAID10 over RAID6? RAID6 makes better use of the drives and is expandable. And since you have to start from scratch anyway, now is the time to decide.
Thanks for the reply,
As a test I was successfully able to create a separate volume from the two new drives.
So without the ability to the expand, my options are
1. Backup the data, delete the current volume and create a new volume with all 6 disks = Total of 16Tb Volume
2. Create a new RAID 1 Volume from the 2 new 8Tb disks = Total of 2 x 8Tb Volumes
3. One at a time replace the two of the four 4Tb drives with the 8Tb drives allowing the RAID 10 volume to re-sync = Total of 12Tb Volume.
If I go with Option 1, will I have the ability to swap out the existing the 4Tb drives with large drives (one at a time, allowing for re-sync), increasing the size of the volume without expanding?
Lloyd
Actually, option 3 is yet another RAID 10 expansion and RAID 10 requires a minimum of 4 drives (the same size), so I don't think that's an option..
Thanks Sandshark, If you setup a RAID 10 using 6 disks, do all the disks have to be the same size?
Lloyd
I tried in the Netgear RAID Calculator and while it's not exactly true that the drives need to be the same space, it will only use an amount from each drive the size of the smallest one. I think that's universally the requirement for RAID10, but wanted to specifically check the Netgear calculator to see there was no exception. Note that the calculator does not take into account the rules of expansion. So while it may appear you can add drives to a RAID10 array, you cannot.
Do you have a compelling reason to use RAID10 over RAID6? RAID6 makes better use of the drives and is expandable. And since you have to start from scratch anyway, now is the time to decide.
RAID6 makes better use of the drives and is expandable. And since you have to start from scratch anyway, now is the time to decide.4x4TB+2x8TB RAID-6 would only use 4 TB on the two 8 TB drives. So you'd end up with a 16 TB volume. You'd need to upgrade two of the 4 TB drives to 8 TB to avoid that.
I'd probably create a RAID-1 volume for now, and shift some shares over to it. Then rebuild everything later on when you need to expand again.
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