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RNDP4000 - ReadyNAS Pro 4- How to change all discs with larger discs and mantain all data and obtain
Hello to all My ReadyNas Pro 4 (RNDP4000) has OS ver 6.10.3 and module of 1024 Mb system RAM. I need to replace the current four 3 TB disks with four new 12 TB disks to obtain a new larger volume ...
That expansion method would be the best option, expanding the drives one by one and waiting for it to finish resync and then proceed with another.
Here are a few links for more information.
Regards
Hi Stephen,
I gave an incorrect indication, I had already installed the 2GB of ram when I updated the Readynas to OS6.x.
In this regard, I ask to you where I can see the system ram installed in the administration pages of GUI interface?
Thanks. Bob
Bob245 wrote:
where I can see the system ram installed in the administration pages of GUI interface?
I don't believe it's there. You can look in mem_info.log in the log zip file, or use ssh
# free -h --si
One thing to remember is that you should insure your backup is up to date before doing this. Replacing the drives one by one will put the most stress on them, and a drive near failure may be pushed over the edge. With RAID5, the loss of one drive while another is syncing destroys the volume. Note that each old drive becomes out of sync as it is replaced, so you don't have the option of going beck to the old drives if you find later that you should have made a backup.
I thank you for the consideration that indicates that it is absolutely true and that I had not considered.
I'm on the last of the 4 discs which is already 25% rebuild.So I already have all the new disks on the NAS. We hope to get to the end without problems.
Hi Sandshark,
yesterday, almost at the end of office hours, the rebuild phase of the last new disk inserted was completed and in the NAS log report the last is this "Disk: Disk in channel 4 (Internal) changed state from RESYNC to ONLINE" . So all OK.
But this morning by connecting remotely to the office, I realized that the status of the NAS is "Healthy" (with green bullet) but on the side it says "Volume Resyncing" and it is already at 66% indicating that it will still take many hours to end.
I was convinced that the rebuild of each disc was enough, instead it seems to be doing a general rebuild of the whole volume.
Is this normal this behavior?
At the end of this "Volume Resyncing" will I have already an expanded volume to the maximum capacity due to the new disks?
Or will I have to do an expansion procedure since previously the volume was made with 4 x 3TB disks, while now it is with 4 x 12TB disks?
I think it's not necessary because from the admin page it tells me that the volume is 32.7 TB, but I ask you what you think about all. Thanks
Bob
Bob245 wrote:
I was convinced that the rebuild of each disc was enough, instead it seems to be doing a general rebuild of the whole volume.
Is this normal this behavior?
The UI messages can be a bit confusing here. When you insert larger disks, there are two steps. First you need to rebuild the existing RAID groups; then you either need to create a new RAID group that uses the extra space, or you need to expand/re-organize an existing RAID group.
I think your first message was just the completion of the first step, and that the second step is still in progress. Note that the amount of time increases as the volume grows, so the last disk will take the longest.
Though it is also possible that something else has triggered the resync of the final disk. You might want to download the log zip file, and look for disk errors (for instance ATA errors) in system.log and kernel.log. Perhaps also take a look at disk_info.log.
Fantastic...! Thanks
Bob
total used free shared buffers cached
Mem: 2.0G 1.9G 155M 4.3M 2.6M 304M
-/+ buffers/cache: 1.6G 463M
Swap: 1.0G 36K 1.0G
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