Date: Sun, 27 Oct 2013 17:57:17 -0700 From: aurfalien <aurfalien@gmail.com> To: C. P. Ghost <cpghost@cordula.ws> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: FreeNAS vs. FreeBSD? Message-ID: <B76069ED-B32D-41F8-8A87-CD3BE6E3771B@gmail.com> In-Reply-To: <CADGWnjU%2BKcnfsv4janV0RDGehZbNJoh2TaNso_S=yRuOYuGVhQ@mail.gmail.com> References: <CADGWnjVX7hHDkHDPVwrZOJGY%2B3BC5mLEq-AdqY4RGYR75qm=eg@mail.gmail.com> <44326394-E318-41B2-B85D-EA17E50B9230@gmail.com> <CADGWnjU%2BKcnfsv4janV0RDGehZbNJoh2TaNso_S=yRuOYuGVhQ@mail.gmail.com>
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One last thing I forgot to mention is ashift. FreeNAS auto partitions to allow an ashift of 12. This was key for me due to my drives (Seagate ES.2) are 4K but report = back as 512 byte. So in FreeBSD my vdevs had an ashift of 9. In FreeNAS the partitions = were such that my vdevs were 12. Now in FreeBSD one can use the gnop hack to get 12, or simply partition = in such a way like starting the partition on 1M block which will allow = 12 as well. No one auto 12's your vdevs other then FreeNAS since its partitioning = for you. In ZoL, Solaris, FreeBSD, one must consciously force the 12. = I'll bet Nexenta also defaults to 9 and will check this week. - aurf On Oct 27, 2013, at 10:25 AM, C. P. Ghost wrote: > On Sun, Oct 27, 2013 at 5:13 PM, aurfalien <aurfalien@gmail.com> = wrote: > I've tested with and w/o swap on a ZFS data set and have seen no = degradation in ZFS performance. >=20 > That's interesting. Are you using a box with AES-NI instructions or = just > plain ZFS (without encryption)? >=20 > That's one of the reasons I'm still undecided. With FreeBSD, I could = set up > swap on a dedicated slice/mirror without going through ZFS/GELI; which > is important on older CPUs that don't have AES-NI instructions. I'm = quite > afraid of the performance hit if swap is on ZFS/GELI. >=20 > Any changes made can be backed up to a file and restored on a fresh = install etc... which is simply either the ability to resort to defaults = and reboot or a fresh USB key. >=20 > That's a very useful feature indeed. I just booted a server with a USB > key containing the FreeNAS image, and it works like a charm. Maybe > something similar would be possible with plain vanilla FreeBSD; will > have to investigate. > =20 > So its more then just a GUI. >=20 > Indeed. > =20 > However they do not have a well defined or a defined for that matter, = roadmap. >=20 > Yup, that's the other concern I have with FreeNAS. >=20 > The most important question would be: would FreeNAS ZFS/GELI volumes > be importable into a regular FreeBSD system, should I decide to switch = back > to FreeBSD (e.g. if FreeNAS ceases to be supported/updated sometimes)? > I suppose yes, provided the keys are properly backed up, but without = testing, > I wouldn't bet the farm on it. > =20 > Thanks, > -cpghost. >=20 > --=20 > Cordula's Web. http://www.cordula.ws/ >=20
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