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New RN314 / EDA500 Owner concerned about Resync times
Long time ReadyNAS NV+ owner, just recently purchased a RN314 (used) and EDA500. Right now I have 4 x WD40EFRX in each chassis. Having just received new 4 x WD40EFRX for the EDA500 today, I insta...
Wed Jun 7 2017 2:38:21 Volume: Volume ReadyNAS500 is resynced. ... Wed May 31 2017 15:57:24 Volume: Resyncing started for Volume ReadyNAS500. It finished. Eventually. The above can serve as a data point for 4 x 4TB drives, RAID 10 configuration, EDA500, on 6.6.1.
Thanks for those who suggested patience!
Raid 5 can only tolerate one drive failure. If a second drive fails while you are rebuilding your raid5 array, you're toast. It's happened to me. My previous generation Seagates (ST2000DL003) dropped like dominos within days of each other on my readynas NV+.
Lesson learned.
Lesson learned.
If maximizing fault tolerance is the only goal, then RAID-6 is the best option. RAID-10 doesn't handle all combinations of 2-disk failures.
Resync speed on the EDA is likely limited by the eSATA connection between the NAS and the EDA.
I wish the RN31x series had some sort of SSD caching to offset the performance penalty of RAID6 though. How goes the rebuild?
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