jeller316

Wanted to update this. After I found out the fans were the problem I continued some testing. First I plugged the fans into a second computer for power to make sure there were no inadequate power problems. But the parity check was around 2-3mbs so power consumption was not an issue. I took the drive bays out and moved each hd away from the 3 fans as far as I could about 1 1/2 inches the parity speed went from 50mbs to about 10mbs notice this is not the 2mbs I was getting. So what I would take from this is that the fans are producing some sort of interference probably from the magnets? The farther away the fans are from any of my drives the faster the parity check is. I had some old fans from a different brand of harddrive cooler and I put them right in front of these drives and there is no slow down in speeds. I ordered a 4 in 3 bay cooler cage from newegg should have no problems now. Thanks everyone for the help and suggestions.

Ok so I started doing some testing. Long story short, after I found that my 2 drives I thought were in question worked fine in a test unraid I hooked everything back up in my server and presto I had 55mbs parity check speeds. I bought 4 "bay coolers" item#330286710321 from ebay each has 3 small fans in it so I could use my dvd bays for harddrives when I hook anyone of these up to power boom speed drops. When I had 53mbs I plugged just one cooler in and speed dropped to 10mbs. I tried the others one at a time and they all drop the speed at least 30mbs. So my question iis does anyone know why this would happen? I put a coolmaster 600watt ps in this thought it would be enough. Maybe these cooler are just cheap and pull to much power? Ant suggestions would be great, I will have to replace these with something so the drives don't fry. FYI here is alink to the bay cooler I bought. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330286710321&ru=http%3A%2F%2Fsearch.ebay.com%3A80%2Fsearch%2Fsearch.dll%3Ffrom%3DR40%26_trksid%3Dm37%26satitle%3D330286710321%26category0%3D%26fvi%3D1

Yes I believe it is my mobo. I had a spare machine sitting here so I put the free unraid on it and added the 2 wd caviar green drives to it to see what speeds I would get. 45mbs! So I guess my next step is to buy a new mobo combo, any suggestions? I have 2 syba pcie cards I need to untilize. The only thing I need to have is 4 sata on board at least.

here is my setup mobo Gigabyte GA-8I915GA pro 4 sata 2 Syba pcie sta cards 7 sata drives parity device: pci-0000:00:1f.2-scsi-1:0:1:0 (sdh) ata-WDC_WD10EACS-00D6B1_WD-WCAU44222777 disk1 device: pci-0000:00:1f.2-scsi-0:0:0:0 (sde) ata-WDC_WD5000AAKS-00TMA0_WD-WCAPW2285667 disk2 device: pci-0000:02:00.0-scsi-0:0:0:0 (sdd) ata-ST3320620AS_9QF22LTR disk3 device: pci-0000:01:00.0-scsi-0:0:0:0 (sda) ata-WDC_WD4000AAKS-00A7B0_WD-WMASY0752723 disk4 device: pci-0000:01:00.0-scsi-1:0:0:0 (sdb) ata-Maxtor_6V250F0_V506ESXG disk5 device: pci-0000:00:1f.2-scsi-1:0:0:0 (sdg) ata-WDC_WD5000AACS-00ZUB0_WD-WCASU2123742 disk6 device: pci-0000:00:1f.2-scsi-0:0:1:0 (sdf) ata-WDC_WD10EACS-00D6B1_WD-WCAU44201025 I have tried everything that was suggested. I changed all queue_depth set to 1 parity speed average 1.5mbs. I could not figure out how to change the parity drive to make it a 31. Just to be sure I changed all cables and I moved the 2 wd green drives to the pcie card just to see if there would be any difference, none. I reverted back to 4.3.3 but still have the same speeds. I still set all drives to 1 no effect. I just don't know what to do? Send both dries back and get new ones it seems that it would be unlikely that both drives are bad I assume it is just something in my setup. The only way I can get better speeds is to take both wd caviar green drives out of the array. I have my old 500gb parity drive here I put it back in and my speeds jump to 18-20mbs. Which is obviously way faster, of course not as fast as some post. How do you get 50-80 mbs? Better hardware?

Thanks for the info I looked at all my drives the 2 WD that were in queston came up as a 1 but 2 of my other drives showed up as a 31. Now all come up as a 1 this is what I want correct? started a parity check and now my speed is 1.4 mbs!!! It got a little worse. Any thoughts? syslog is here. http://pastebin.com/m2e072b6c

I tried typing in the commands like they are shown but it says it is an unknown file or directory. Do I need to substitute something to tell it which drive to look at?

Thanks for the help I will try this but I am so dumb when it comes to linux is there a how to for a newb?

I have been having slow speeds on my parity check for awhile replaced my mobo but had same problems. Finally I decided to take a look at the 2 new drives I added both are TB WD caviar green drives 16mb cache. Model WD10EACS. With these 2 drives in my unraid along with some others I was getting on average 2.4 mbs which it would take about 3 days to do a check. I took one of these drives out of the array and still have slow speeds then of course took the other out and swapped them but still no better. If I take both of them out of the array and put in my old WD 500gb drive as parity my speed jumps up to 17-20 mbs. Has anyone else had this problem? It seems to be related to both drives. I did a search on the forum and it looks like other people have had success with this drive. There is no jumper on the drive so it should be sata 2. If the mobo isn't sata2 should I put the jumper on? Any help or suggestions would be great. Thanks in advanced.

Thank you so much it works now.

I am new to unraid but wanted to use unmenu to troubleshoot. I looked at the wiki but I must have done something wrong. I downloaded the 3 zip files Made a folder on my unraid thumbdrive called boot then in that I put a folder called unmenu. On wiki it looked like this was the way to do it. Extracted all files to boot/unmenu I started unraid typed /boot/umenu/uu but it does not reckonize the command. I know I did soemthing wrong but I guess I am not understanding how to do this. Any help would be great.

My board went out on my existing unraid server so I picked up a gigabyte GA-8I915G Pro it seems to have everything I need 4 sata ports, pci express for more sta ports, and a gigabite lan. Problem is I have tried all sorts of bios combinations and can't get it to boot. Any thoughts would be appreciated Thanks.