May 11, 201214 yr Case: Norco 4224 Data Drives: 13x 2TB Western Digital Green (WD20EARS), 7x 3TB Western Digital Green (WD30EZRX) Parity Drive: 1x 3TB Western Digital Green (WD30EZRX) Cache Drive: 1x 2TB Western Digital Black (WD2002FAEX) Sata Cards: 3x SUPERMICRO AOC-SAT2-MV8 CPU: Intel E5200 (2.50GHz) Motherboard: Supermicro MBD-X7SBE Memory: 4GB G.Skill (DDR2-800 5-5-5-15) Power Supply: Corsair AX850 Operating System: unRAID 5.0 RC3 Looking for ways to improve parity speed, right now I get 65-70MB/s, which is around 12-16 hours with 3TB of parity every month. I see people on 3TB Hitachi drives getting 120MB/s, but I know they are faster drives. Are my "green" drives really the limiting factor here? They each claim to read 105-110MB/s. When I pass 2TB, it speeds up to about 80MB/s for my 3TB drives. Is it my PCI-X AOC-SAT2-MV8 cards, or other type of bandwidth issue? Or is this just Unraids required overhead during parity syncing with 20 data drives? Would buying better SATA controllers help? Thanks.
May 11, 201214 yr Author That's what I figured. I am debating upgrading my server completely, I have about $1000 to work with and would like to get my parity syncs to 90-100MB/s. What's the thoughts on this? http://secure.newegg.com/WishList/PublicWishDetail.aspx?WishListNumber=27139568 I thought Supermicro came out with AOC-SALSP2-MV8s that have SATA3? I can't seem to find them anywhere though. That Z77 motherboard has 3x PCI-E x16 slots, however 1 is rated at x1, when those cards want x4. Surely that would limit my parity sync? The motherboard also doesn't have onboard video, but the Intel HD 2000 graphics in the processor should handle that, correct? Is there a micro ATX motherboard that has 3x PCI-E that run at x8 or x16 and works flawlessly with unRAID? Thanks.
May 11, 201214 yr I thought Supermicro came out with AOC-SALSP2-MV8s that have SATA3? I can't seem to find them anywhere though. http://www.wiredzone.com/Supermicro-AOC-SAS2LP-MV8-8-port-SAS-SATA-Controller-Card~10021085~0.htm
May 11, 201214 yr Author I thought Supermicro came out with AOC-SALSP2-MV8s that have SATA3? I can't seem to find them anywhere though. http://www.wiredzone.com/Supermicro-AOC-SAS2LP-MV8-8-port-SAS-SATA-Controller-Card~10021085~0.htm Thanks, I just need a motherboard (preferably socket 1155), that has 3x PCI-E that runs at at least x4. Any suggestions? I would prefer micro but I don't think there is a micro board out there that has this? EDIT: Looks like i'll need 3x PCI-E x8.
May 11, 201214 yr The AOC-SASLP-MV8 will be fine and make it much easier to find a MB. The fastest consumer HDDs are the new Seagates that operate at up to 155MBps. SATA II supports up to 300MBps. SATA III is only needed for faster storage devices, e.g. SSD. See here for prototype builds: http://greenleaf-technology.com/blogs/prototypes/index.php?id=2601838967498401788
May 11, 201214 yr I don't know if this board would be out of your price range but I use the MBD-X9SCM-F-O. It's a bit pricey, but a true server mother board with the ability for IPMI. 2 (x8) PCI-E 2.0 in x8 slots 2 (x4) PCI-E 2.0 in x8 slots http://www.newegg.com/Product/Product.aspx?Item=N82E16813182253
May 12, 201214 yr I don't know if this board would be out of your price range but I use the MBD-X9SCM-F-O. It's a bit pricey, but a true server mother board with the ability for IPMI. 2 (x8) PCI-E 2.0 in x8 slots 2 (x4) PCI-E 2.0 in x8 slots http://www.newegg.com/Product/Product.aspx?Item=N82E16813182253 Man if i ever move to the states I'm gonna love newegg :'( I want one, that board is hot
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