Chris Moore
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- May 2, 2015
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If you switch to the H310, you can use ZFS to mirror the boot drives. It is a good safeguard. I use a mirrored pair of spinning disks for the boot pool in the servers I run at home. It probably doesn't qualify as a big benefit, but it is something.I doubt there are any tangible benefit for switching to H310 mini.
I think the higher vdev count of the second option (the one I included) will give you more IOPS / better performance. It is the way I would suggest going.Thanks for the links I will give them a read. Just to confirm, do you recommend against "4x stripped mirror + 2x 10 disk raidz2" setup or just happened to not included it in the quote?
The only way you might have trouble with them is if they were formatted for a non standard sector size. NetApp is bad about doing that and it makes you have to use a special utility to reformat (low level) the drive to change the sector size. It is a terrible pain, but I don't think you have that problem with these. The SMART data that you shared is pretty standard for a SAS drive and I don't exactly like it because I feel like it could be more informative, like SATA drives, but it works. If you can, you might want to buy a couple more to have as spares. I try to keep at least two of each kind of drive I am using on the shelf as cold spares.Now back to the original topic, do you think is it possible that these SUN firmware (assume they are) will give troubles with FreeNAS?
If there were something (like the sector size) that was out of spec with these, you wouldn't be able to create a pool and write data to the pool. If that is working, you should be good. The burn-in testing is about looking for mechanical defects that would cause an early failure. You want to know if the drive will fail while it is still (hopefully) in some kind of warranty. One of the servers at work, when we set it up in Jan 2017, had three drives out of 60 fail in the first six months. Now, 21 months in, no additional failures. By stressing the drives at the start, the hope is that any early failures will show themselves before data goes into the system. As for what to watch for,how do I test against it? Maybe I can do a pool performance test but am unsure what to watch for.
solnet-array-test (for drive / array speed) non destructive test
https://forums.freenas.org/index.php?resources/solnet-array-test.1/
If you use the solnet-array-test, it will show you if any of the drives is running slower than the rest, which would drag down the performance of the entire pool.
If it has two disks presented, it can use the parity to correct errors. If you present a hardware RAID set as a single disk, it doesn't have parity to correct errors, but it can still tell you that there was an error.Correct me if I am wrong but I believe ZFS can work on top of raid card presented LUN, you just loose SMART monitoring and other optimizations.
It should, and you might only be without the SMART data.If I do 2 single drive raid0 and mirror them in FreeNAS, I suppose redundancy and checksuming/scrubbing/integrity should still work?
I don't like the USB boot option. I use mechanical disks and keep an eye on the SMART data. SSD is also an option and very reliable.In the end I feel this is not much worse than dual USB boot stick setup.
RAM is an option. If you have a moment, you might want to look at this very informative video regarding L2ARC:With that said, I still have 16 DIMM slots, so I can add more RAM if situation calls for it.
https://www.youtube.com/watch?v=oDbGj4YJXDw
There are test results in the referenced thread regarding benchmarks of SLOG devices.However w/o official documentation and seen nobody ever tested this,
I did too. Don't feel bad.Besides, I found a good deal on a used P3700
ThanksYeah I am going to test it and record it, for science [read: fun]!![]()