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Need help with ReadyNAS Pro rebuild
Hello, I had a previous topic on a server that had an unreliable Ethernet connection. Could reboot and it would work for awhile, then die. Seemed like hardware but it was suggested it might need a...
I also wanted to ask, is RAID 6 bulkier than RAID 5. I think I was RAID 5 before.
linkup1 wrote:
I also wanted to ask, is RAID 6 bulkier than RAID 5. I think I was RAID 5 before.
Your config is 2x8 + 2x4 + 2x3, correct?
With mixed drive sizes, you don't have pure RAID-5. You have multiple RAID groups that are concatenated into a single volume. With your setup (with single reduncancy), you'd have 3 RAID groups.
- 6x3 TB RAID-5 that spans all disks
- 4x1 TB RAID-5 that spans the 4 TB and 8 TB disks
- 2x4 TB RAID-1 that spans the 8 TB disks.
You can visualize this as a wedding cake (multiple tiers, getting smaller at the top).
With single redundancy, the capacity rule is "sum the disks and subtract the largest". So that adds to 22 TB (~20 TiB). Note that with this rule, you waste space if the two largest drives aren't the same size. Since you have two 8 TB disks, that's not a problem.
With RAID-6 / dual redundancy, to avoid wasted space you need the four largest drives to be the same. With your configuration, you'd end up with a 14 TB (~12.7 TiB) volume size. If you (hypothetically) had 4x4TB + 2x3TB you'd end up with the same space. The RAID layers would look like this
- 6x3 TB RAID-6 that spans all disks
- 4x1 TB RAID-6 that spans the 4 TB and 8 TB disks
- 4 TB on each 8 TB disk is unused.
Since you are well-backed up, I think XRAID single redundancy is the best option for you.
Hello again,
Well, turns out my expected space jumped up when I went to RAID5, and then I noticed it somehow was in Flex-Raid mode. Chose X-RAID and the expected space jumped up to 19.99 so you were right on. Not ideal, but it is what I have available right now to allocate to the NAS.
Now I have the next problem...
I can't connect to my shares. I can use the NAS dashboard, indicating I can "see" the NAS, and the NAS shows up as a Computer in Explorer (win7), but when trying to see my shares, I get the "Windows cannot access \\PB2" and the ox80070035 error. So that is what I am working on now. No good to get it up if I can't connect to it. I used the same server name, same name for the volume, same names for the shares. Was that a mistake?
Trying to use my manual, but my manual is for RAIDiator 4.2.17, far from what the server is running. Just not getting why my PC won't connect to it...would the fact it is still re-syncing matter?
Thanks
Don't know which of several changes made a difference, but suddenly I can see the NAS and map my shares....saved you guys from having to figure that one out....thanks so much...
but....the same old connectivity issue is back....see the new topic I created as the old topic on the subject was closed.
Thanks
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