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Readynas Pro 6 X-RAID 2 Dual Redundancy Proactive Drive Swap
Hi all,
I have a Pro 6 running 4.2.27 with 4x1TB Hitachi drives (approved on HCL) and am planning to proactively replace 2 of them so from a mechanical / wear perspective the drives in the volume are different. I've heard many horror stories of multiple drive failures when a failure does occur. I figure by having half of my volume on newer disks I reduce this risk to some extent.
Now... I would of course backup my unit (500GB data approx) and then replace one disk at a time, waiting for it to re-sync and become fully redundant. I would then leave a few days for it to settle in and then do another drive.
Is there anything I should be aware of or additional precautions I should take. If it is better I shut down the units rather than hot swap them, then I can do this also. I'm concerned as there are some horror stories on here with folks re-sync's taking days and days and then freezing rendering the whole volume useless.
Is there are rough amount of time each disk should take to re-sync and become redundant on a system with no users.
I see. It should still be one at a time, same procedure with expansion. Replace one, let it resync and once done, replace the next disk and so on and so forth.
I see. It should still be one at a time, same procedure with expansion. Replace one, let it resync and once done, replace the next disk and so on and so forth.
All - Just so I have an idea of the time involved, how long ball park would an X-RAID 2 rebuild take on a pro 6 after I swap one of the disks? I will do this one at a time.
I have 4x1TB in an X-RAID2 dual redundancy and am looking to proactively swap two of them so mechanically the disks are different from a wear perspective. I have exactly the same models since I kept some back when the installation was initially completed.
All - Just so I have an idea of the time involved, how long ball park would an X-RAID 2 rebuild take on a pro 6 after I swap one of the disks? I will do this one at a time.
I'm thinking at most 3 hours per 1 TB disk. I've seen a log posted some time ago that showed about 7 hours to resync 6x2TB RAID-6. That's 3x the disk I/O that is needed for 4x1TB RAID-6.
OK Thanks... Some folks on here talk about hundreds of hours but I suspect something is going wrong then. I will verify all SMART data before starting and have a secondary unit acting as a backup.
I will verify all SMART data before starting and have a secondary unit acting as a backup.
Both good practices. You should be able to see the progress, both with RAIDar and from frontview. Often hovering over the disk icons will give more extra info.
