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Or you could build an 15TB unraid server (HDDs included) for $1350
Here's the rough breakdown:
MB: $80 (Any socket 1155 MB w/ 6 sata ports)
CPU: $40 (Pentium G530)
RAM: $30 (4GB)
PSU: $80 (Any good single rail 500W PSU)
Case: $100 (Antec 900 or similar)
unaid Pro license: $120
HDDs: 6 x 3TB = $900
Purchase a Supermicro AOC-SASLP-MV8 8-port SATA expansion card for $110 and three 5-in-3 hot swap bays (~$300) and you can expand to 14 HDDs or a total 39 TB capacity if you stick with 3TB HDDs.
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I'm thinking raid 5 so 12hdds isn't that mutch. My main consern is that it will work perfectly for my needs. Basicly what im saying is that i don't want to know what's cheapest but what will give me the best user experience.
For those of you that own a synology nas:
1.How good is the torrent client?
2.Does the torrent clien support rss?
3.Does the torrent clien support a default location for every seperate rss?
4.Can i chose dowload location for each torrent?
5.Does the torrent clien support magnet links?
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For home use I really don't think having everything spinning 24x7 and spreading parity makes sense. A dual failure and you lose it all. And if you really think you can't home build something as nice or nicer than what these companies sell you then I've got a bridge you may be interested in as well. There are forums full of builds that say otherwise! Buy something that doesn't require all of your drives to be the same size for sure. You want something easy to add hardware to, buying an additional external case/expander doesn't fit that in my mind.
As my needs have changed over the years (and you's will too) I've swapped motherboards, CPU, memory, and cases. I've gone from IDE to SATA and now to SAS adapters. I've used the same software, with upgrades, and never lost data. I've had drives fail at least a half dozen times over the years, thankfully no dual failures but if it happened I'd only lose some of my data and not all of it - I do this while only losing a single drive to parity overhead. Torrents, Usenet, mySQL, and all sorts of other plugins have been setup for unRAID too.
Make sure you do your research, buying 2x sucks as many converts to unRAID can attest lol :-)
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What are the requirements for spin down? If the drives are spun down and access occurs what spins up? When you replace drives in ZFS you have to add pools yes?
I can read from a single drive and only spin that one drive, if I write then the parity drive must spin too. It's possible to spin up drives in groups if I wish.
If I add disk I can add or upgrade one at a time. The only restriction is that the parity drive be as big or bigger than any data drive. I lose no more to parity supporting one data drive than I do to 19 data drives....
What happens if you suffer a dual failure? I would lose data on the two failed drives but nothing else. I could use standard ReiserFS recovery tools against the failed drive and a recovery service wouldn't be charging me to recover from a special FS nor require other drives to recover data.
Make no mistake, ZFS and others have their place. In particular unRAID isn't as fast, I can saturate a 100meg connection and put a hurt on Gig but by no means fill it. That said, I can stream full bitrate video in 10meg so my primary purpose is served. ZFS also has the ability to dedupe which I envy but my video shouldn't have dupes I'd think - I don't know. When I look at the memory and CPU reqs for ZFS I find them far far higher than the underclocked celerons and Atoms unRAID can use. I'll admit ZFS is interesting though!
That said, the unRAID box I'm building now will be on top of ESX. I'll run a Xeon and massive memory so that I can leverage the hardware for many other things :-) I'll use vt-d to keep unRAID advantages and use the rest of the box for playing and offloading services from my desktop. Not typical by far...
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Replacing an existing drive is easy yes, can you simply add a drive to expand a pool or swap in say a 3tb I'm place of a 1tb?
I have heard the data corruption idea before, have you ever seen it occur? I haven't, all of my vids appear to be okay so far as I know but I understand the potential issue. I do check parity once a month but I'm not sure this solved the "bit rot" issue..
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No1451
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Posts: 18
I encountered it, I found 1-2 files going in about a month. YMMV depending on library size(I buy lots of movies so I have a ton). I detected it with my weekly hashchecks.
I can have a pool of 3 1tb drive, replace them with 2tb and bring it up to 6TB yes. Just needs to have the flag set.
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Okay so what I'm pointing out and we're dancing around is that upgrading a single drive, not a pool, doesn't happen with ZFS. Have 6 1tb drives and want to replace just one with a 2tb, what happens? New pool right or swap all of the old pool? You can't just add a single disk or swap a single disk, ZFS deals with pools. I don't think you can have a pool of disparate drives either can you? UnRAID is much like JBOD only with parity protection...
I've not witnessed bitrot, can't say it doesn't exist but I don't think it has effected me. I suppose I could write hashes for all of my movies and check them to see....
Fwiw, I too have an extensive library, north of 1k not including movies so like you considerable time invested.
I don't dismiss ZFS mind you as I think it's pretty powerful but in my case possibly overkill. My NAS are pretty much appliances that receive almost nothing akin to "maintenance" and I like that. My new setup maybe not so much, we'll see....
