Friday, October 13, 2017

raid - Are consumer class hard disks okay for zfs?

I just recently bought a new server an HP DL380 G6. I replaced the stock smart array p410 controller with an LSI 9211-8i.



My plan is use ZFS as the underlying storage for XEN which will run on the same baremetal.



I have been told that you can use SATA disks with the smart array controllers but because consumer drives lack TLER, CCTL and ERC its not recommended. Is this the case?



I was wondering if using the LSI controller in JBOD (RAID passthrough mode) does the kind of disks I use really have as much of an impact as they would with the smart array controller?




I am aware that trying to use a RAID system not backed by a write cache for virtualization is not good for performance. But I was conisdering adding an SSD for ZFS. Would that make any difference?



I reason I am so obsessed with using ZFS is for dedup and compression. I don't think the smart array controller can do any of those features.

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