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Forum Discussion
choosing the parity disk (best place for the new one ?)
hello, with RN 6.6 is it possible to choose wich disk will be the parity disk ? On a pro 6 is it possible to decide to put 2 new disk for the raid 6 parity ? Thanks
grish4 wrote:
with RN 6.6 is it possible to choose wich disk will be the parity disk ?
There is no parity disk (also true with 4.2.x and 5.x.x systems). Parity blocks are distributed across all the disks. That improves write performance (and evens out disk usage).
grish4 wrote:
On a pro 6 is it possible to decide to put 2 new disk for the raid 6 parity ?
If you are using XRAID on the pro-6, then with 4.2.x firmware you can instruct the system to add the next disk for redundancy. You need to do that before you insert that disk. RAID-6 requires at least 4 disks, and the largest 4 should be the same size.
StephenB wrote:
grish4 wrote:with RN 6.6 is it possible to choose wich disk will be the parity disk ?
There is no parity disk (also true with 4.2.x and 5.x.x systems). Parity blocks are distributed across all the disks. That improves write performance (and evens out disk usage).
grish4 wrote:On a pro 6 is it possible to decide to put 2 new disk for the raid 6 parity ?
If you are using XRAID on the pro-6, then with 4.2.x firmware you can instruct the system to add the next disk for redundancy. You need to do that before you insert that disk. RAID-6 requires at least 4 disks, and the largest 4 should be the same size.
grish4appears to be running OS 6 from the original post, how does that deal with Raid-6?
bedlam1 wrote:
grish4appears to be running OS 6 from the original post, how does that deal with Raid-6?
I wasn't sure if he had two ReadyNAS running different OS versions, or not.
Per the manual (page 37) you switch to flexraid, and then add the disk. http://www.downloads.netgear.com/files/GDC/READYNAS-100/ReadyNAS_Desktop_IG_EN.pdf?cid=wmt_netgear_organic
The manual says that the disk will be added for additional redundancy (with no option for anything else). But I don't think that's correct - I think you do need to explictly say that you want to add the disk for data protection. That's certainly the implication here:
mdgm wrote:
You had to disable X-RAID and choose the next disk added to add parity, add that disk and then you could have re-enabled X-RAID again.
I don't recall if that's a volume setting, or if it's an option when you click on the disk you want to add - though I think it's the latter. But look for that setting before you add that disk to the volume.
Note that with flexraid, the system will not automatically add the disk to the volume, you always do that manually.
I start from scratch after a second hand buy. I'm cleaning drive houses because they are all blocked !and it's hard to open without using the screw driver. Aniway. 3 new disk, 3 old. No best way to arrange them in RAID 6.
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