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Add new hard disks
Hello; We have a Netgear ReadyNAS 316 with 4 harddrives with raid5. We have a capacity problem and we want to add 2 disks to this raid system, so we want to total 6 disk drives work with raid5. I...
ArifKaya wrote:
We have a Netgear ReadyNAS 316 with 4 harddrives with raid5. We have a capacity problem and we want to add 2 disks to this raid system, so we want to total 6 disk drives work with raid5. I didnt find a clear explanation for this incident. What steps should I follow, thanks...
The section starting on page 39 of the manual does explain how to expand:
Basically you hot-insert the first disk (NAS running) and wait for the resync to complete. Then hot-insert the second. If the disks are formatted, you will need to format them in the NAS before it will expand.
Netgear suggests backing up the NAS first, as there is no RAID redundancy during the expansion.
The new disks need to be at least as large as the ones in the NAS already. If they are larger, then you should switch to X-RAID if you aren't using it. (If there is a green stripe on the XRAID control on the volumes tab, then you are running it). When done, the capacity rule is "sum the disks and subtract the largest". Note that the NAS reports capacity in TiB, not TB.
The hardware compatibility guide isn't helpful, as it hasn't been updated for a long time. NAS-purposed CMR disks are good options (WD Red Plus or Seagate Ironwolf). Don't use the current WD Red line, they are SMR. Similarly, most desktop drives in the 2-6 TB size range are SMR. Enterprise disks are also good choices.
FWIW, I always test my disks in a Windows PC using vendor tools before I hot-insert them.
ArifKaya wrote:
We have a Netgear ReadyNAS 316 with 4 harddrives with raid5. We have a capacity problem and we want to add 2 disks to this raid system, so we want to total 6 disk drives work with raid5. I didnt find a clear explanation for this incident. What steps should I follow, thanks...
The section starting on page 39 of the manual does explain how to expand:
Basically you hot-insert the first disk (NAS running) and wait for the resync to complete. Then hot-insert the second. If the disks are formatted, you will need to format them in the NAS before it will expand.
Netgear suggests backing up the NAS first, as there is no RAID redundancy during the expansion.
The new disks need to be at least as large as the ones in the NAS already. If they are larger, then you should switch to X-RAID if you aren't using it. (If there is a green stripe on the XRAID control on the volumes tab, then you are running it). When done, the capacity rule is "sum the disks and subtract the largest". Note that the NAS reports capacity in TiB, not TB.
The hardware compatibility guide isn't helpful, as it hasn't been updated for a long time. NAS-purposed CMR disks are good options (WD Red Plus or Seagate Ironwolf). Don't use the current WD Red line, they are SMR. Similarly, most desktop drives in the 2-6 TB size range are SMR. Enterprise disks are also good choices.
FWIW, I always test my disks in a Windows PC using vendor tools before I hot-insert them.
Hello;
Thanks for usefull informations, I shared a screenshot, I dont understand our disk 5400 or 5900 RPM. Thanks...
ArifKaya wrote:
I shared a screenshot, I dont understand our disk 5400 or 5900 RPM. Thanks...
It's 5900 rpm, but is in the "5400 rpm" performance class. That just reduces the number of performance classes. You can safely mix rpm speeds, you don't need to match them.
If you want to add 4 TB drives, you can get a Western Digital WD40EFRX (NOT the EFAX) or a Seagate Ironwolf (ST40000VN006). I think either would be better options (and less expensive) than tracking down an identical Toshiba drive (which I think has been discontinued).
Though if you want to position for future expansion, you could get two 8 TB drives (ST8000VN004 or WD80EFZZ). That would cost about twice as much now, but you'd be able to expand more cheaply next time around.
6x4TB would give you 20 TB (~18.2 TiB) now, 4x4TB+2x8TB XRAID would give you 24 TB (~21.8 TiB) now.
Hello Stephan;
Its said that WD delivery sometime have problem, dealer sometimes send EFAX instead of EFRX and Seagate Ironwolf (ST40000VN006) is not in the compatibility list, will it make a problem ?
Thanks...
(I shared my compatibility list)
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