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Forum Discussion
Sandshark
Oct 16, 2017Sensei
OS 6.9.0-RC1 warning about dissimilar drives
One of the drives in my "sandbox" system (Pro2 with latest beta, currently 6.9.0-RC1) died (I use ones with higher SMART errors removed form other systems, as much as anything to see if the new OS ve...
bedlam1
Oct 16, 2017Prodigy
Interesting, I replaced 2 of 4 7200rpm 2tb drives with 2 5980rpm 4 tb drives under ReadyNASOS 6.9.0-T62 (Beta 2) on my Pro 4 a couple of weeks back.
No warnings were given, now on ReadyNASOS 6.9.0 (RC1) and all is well (still)
- SandsharkOct 16, 2017Sensei
Maybe more critical in a RAID1 than a RAID5? I may have never done this in a 2-bay unit.
- mdgm-ntgrOct 16, 2017NETGEAR Employee Retired
With disks with dissimilar speed you're limited by the speed of the slowest disk. You can mix and match drive speeds but it's obviously not the ideal configuration.
I guess this may start to have more of an impact once you start using features like SSD tiering.
- StephenBOct 17, 2017Guru - Experienced User
I'm wondering how the warning was worded?
I'm not sure how this ties to tiering, but I could see it having a bigger performance impact in some of the more complicated RAID modes (RAID-50 and RAID-60).
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