Date: Thu, 15 Oct 2015 08:34:09 -0500 From: Adam Vande More <amvandemore@gmail.com> To: "William A. Mahaffey III" <wam@hiwaay.net> Cc: "FreeBSD Questions !!!!" <freebsd-questions@freebsd.org> Subject: Re: Follow-up install questions Message-ID: <CA%2BtpaK1v=e8avEBEuHJKpcRnPXpqes7iBBgpsmgOpkWv=ah8pQ@mail.gmail.com> In-Reply-To: <561F9FAC.9080308@hiwaay.net> References: <561F9FAC.9080308@hiwaay.net>
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On Thu, Oct 15, 2015 at 7:42 AM, William A. Mahaffey III <wam@hiwaay.net> wrote: > Pursuant to ongoing issues trying to install FreeBSD 9.3R on my Myth-TV > box, I have some questions about provisioning another box, also w/ 9.3R. > That box is AMD A-10 APU based, w/ 8X 1 TB 2.5" HDD's. Given the problems I > am having getting the (smaller, simpler box) going. I am pondering using > ZFS on the larger box. To that end, I have a couple of questions. ZFS > supports (man page) 'unmirrored pools'. Is that tantamount to striped RAID > ? If so, what sort of I/O performance can I look for there ? There was a > lengthy thread a few weeks ago on ZFS & performance. I (think I) recall > someone saying they used a bunch of 1-HDD vdevs to get some semblance of > good I/O performance w/ a RAIDZn configuration, is that (additional layer > of config) actually required ? My man page says vdev's can be single > devices or 'a collection of devices', with devices being disks (individual > HDD's ?), files, mirrors, or raidz's. Are those mirrors necessarily ZFS > mirrors, or can they be gmirrors ? I am interested in maximizing the size > of the storage pool available, & the best I/O performance I can get. This > box will be backed up across the LAN onto other boxen, so I am worrying > less about HDD reliability & more about performance & max available > GiB's/TiB's. TIA & have a good one. > Why is speed such a concern for you? A single SATA is easily enough to read and write multiple 1080p streams concurrently. What do you have against white space? It's too painful to read further. -- Adam
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