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DIY: FreeNAS zfs/raidz 3TB storage server report
Yeah, I ended up getting a Transcend 128MB module that plugs directly into the PATA connector on the motherboard. Works just fine, although I might revise that later... Makes initial installation a little workaroundy, since I can't pop a CD-ROM drive in there even temporarily, so I have to... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
I just did some quick testing on my FreeNAS setup with this in mind. I tried doing a 1GB file copy multiple times with buffer sizes of 8K, 16K (default), 32K and 64K (your suggestion). Interestingly, 64K is not an automatic win and (in my case) was actually the worst performer. Several trials... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
Thanks for the comments, 00Roush and hua_qiu, especially some of your OSol/ZFS numbers! I haven't gotten to start tuning my setup yet, as I am preparing a move in a couple weeks. Hopefully I'll have some time after that to try OSol. -
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DIY: FreeNAS zfs/raidz 3TB storage server report
Yes, good and important point. I think I realized that at some point, after I had originally written that statement. Thanks for the info! I really do need to try it soon. -
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DIY: FreeNAS zfs/raidz 3TB storage server report
Thanks for clarifying; I understand your point better now, and I apologize for being harsh in my reaction. Yes, I do intend to try OSol. I don't have a way to conveniently test the ISO which I downloaded, but I did find instructions on getting a USB boot that may work. Or I just have to... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
No, I don't. Or, I should say, only if performance were the sole/primary concern, in which case one would not choose ZFS. However, if ZFS is the primary/sole concern (or, at least, performance is not), then you are comparing apples to oranges by comparing the performance of ZFS on FreeNAS to... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
I'm glad it has helped. Certainly, my build is a bit raw around the edges, as it's my first time building a DIY NAS and first time dealing with ZFS. I'll be improving things as I go along (and maybe, eventually, find a case I like!). ZFS has been around longer in OpenSolaris and so is, in... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
This page is part of a (the?) ZFS port to Mac OS X, but is a good one-page summary of ZFS features: http://zfs.macosforge.org/trac/wiki/whatis -
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DIY: FreeNAS zfs/raidz 3TB storage server report
No. FreeNAS has it implemented in kernel-space and does not need FUSE. Linux, on the other hand, is currently implementing ZFS with FUSE because of licensing issues. But there is the checksum overhead, as you mention. EDIT: You are also correct that ZFS will perform best under OpenSolaris, in... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
Primarily, because I am evaluating ZFS. I am also a fan of technology that does things right, and ZFS gets many things right: atomic operations, fail-safe mechanisms from start to finish, migration, integrated raid, error correction, instant snapshots, live scrub, block compression/encryption... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
Both OpenSolaris and FreeNAS (i.e. FreeBSD) implement it in kernel-space; it's Linux's GPL that keeps it in Linux user-space. As for the rest, I'm glad you evaluated your options and chose what you did. So did I. I picked ZFS. Right now, that is not negotiable. What is negotiable is choosing... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
That's quite impressive hua_qiu, except it is lacking a particular requirement of mine: ZFS. (I wasn't explicit about that requirement in my initial post, but it is one of my requirements.) As far as I know, Linux distributions only implement ZFS in FUSE, which I doubt will do much better... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
Considering I'm booting off a USB stick and not the RAID itself (which isn't possible anyway), I should be able to swap out the boot device with something else (which I am planning... a 128MB IDE Flash drive is on the way). Trying the boot with ESXi should be testable without interfering with... -
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DIY: FreeNAS zfs/raidz 3TB storage server report
See first post; updated with initial performance measurements. -
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DIY: FreeNAS zfs/raidz 3TB storage server report
You don't consider raidz as software raid? Although perhaps raidz is more portable, in theory. Interesting idea... I'll have to look into it. It would be cool to test the theory above. -
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DIY: FreeNAS zfs/raidz 3TB storage server report
I recently put together a report on my recent NAS build. http://dl-client.getdropbox.com/u/49293/FreeNAS_Build.html Updated: 2009 Aug 01 It runs FreeNAS 0.7RC1, contains five 750GB drives in a zfs/raidz configuration (for 3TB of storage and redundancy enough for one drive failure), gigabit...