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The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
byAnonymous Coward writes:
Holy cow! $1,699 to $3,799" for "10TB or 12TB" of storage?
Case with 8 internal bays: $40
600 Watt Power supply: $35
MB with 8 SATA3 ports: $115
2.5gig dual core processor: $73
8 2TB drives: $800
1 Gig of RAM: $30
Total: $1093, for 16TB of storage. Yeah, yeah, you need one of them as a spare drive for redundancy, and you need an OS. You also need a few minutes to assemble and install. But for that price? Why pay twice as much? Hell yeah, roll my own, baby!
byJoe_Dragon ( 2206452 ) writes:
That PSU is to cheap at least get a $50+ one and don't just go for high watts.
get 2-4 GB ram mini should only be about $50-$60 for good 8 GB DDR 3 you want at least dual channel ram.
8 sata ports you may want to get a pci-e raid card / sata card. Maybe even SAS.
redundancy you may want raid 6 on a raid card and not on board fake raid and most south bridges only have 6 ports any ways.
Also some low end MB only have 10/100'.
bygman003 ( 1693318 ) writes:
That PSU is to cheap at least get a $50+ one and don't just go for high watts.
Uh, what? I can understanding criticizing a specific PSU brand as being too unreliable or low-quality, but come on! Just saying "any PSU less than $__ is crap, you need to spend at least $__" makes you sound like a classic Conspicuous Consumer.
get 2-4 GB ram mini should only be about $50-$60 for good 8 GB DDR 3 you want at least dual channel ram.
This is a NAS, not a server. Half a gig would be sufficient, honestly - I've run some with 256MB. One gig is plenty, unless you want to keep files on a RAMdisk.
8 sata ports you may want to get a pci-e raid card / sata card. Maybe even SAS.
When you're just building a home/small office NAS, you don't need a high-performance RAID card - software RA
byHuguesT ( 84078 ) writes:
1- I don't know of any good-quality power supply below about $60. Good quality means Japanese capacitor, low ripple, good resistance to micro cuts, no lead, good current on the 12V rail, at least bronze-level efficiency, silence, and so on. Cheap no-name PS eventually fail, sometime taking the whole PC with them. Most people dismiss the PS, but it is an essential investment in a piece of equipment that runs all the time.
Read this [tomshardware.com] for instance.
2- On a homebrew NAS you want to run ZFS, you really do. In fact this is the number one reason to build a homebrew NAS because the commercial ones never support it. This requires approximately 1GB of RAM per terabyte of data for good performance. ZFS essentially eliminates the possibility that your RAID becomes invalid and unrecoverable due to too many bad silent blocks. Read this [zdnet.com].
3- For ZFS, the recommended setup is the equivalent of RAID6 as soon as you hit 4 disks of data, and to split arrays beyond 6 disks of data.
RAID 6 is only needed when it's possible for a drive to fail, and then for another to fail while the array is still recovering
That is precisely the problem. Your array may have already failed without you knowing it. If there is a single unreadable bad block anywhere on the "good" disks while your array is being rebuilt, the reconstruction is impossible with most hardware and software RAID solutions. You have already lost your array completely.
RAID is far from the panacea it is sold to be, in fact it is now an obsolete solution to a real problem.
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byBLKMGK ( 34057 ) writes:
Look at unRAID. One drive supports the parity and the FS is standard ReiserFS. Lose a disk and a rebuild is no problem. Lose TWO disks, and be completely unable to recover with standard tools, and you lose.... two disks of data NOT the entire damned thing. In 5++ years of using this system and having gone through multiple drive failures I've never once lost data. Never once had two disks die at once either and my systems run 24X7X365. I had one machine up to over 11 disks once but with larger disks have bro
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