lensman

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  1. Not sure what you mean. Is anyone selling it for less than $200? The best I've seen is 240 USD.
  2. I have the Antec 900. * I removed the bottom drive cage entirely along with the fans that were in the bottom two positions. * I blocked the side vent and the PCI slots (I had vented slot covers there. Not sure if that came stock). * I put in 3 Supermicro 5 in 3 cages and have 15 drives currently. I've downvolted the fans on the cages to 5v. * I run the top and back fan on low To me the noise level is acceptable and I'm moderately picky. This is on the parlor floor of a 4 story condo and there is some road noise from outside. I can definitely hear when a drive spins up, though, so the ambient noise isn't *that* high.
  3. I ordered one of the new bunch - specifically the SC846TQ chassis with the SuperMicro H8DME-2 motherboard and Opteron 2212 HE CPU. I plan to get a Norco fan wall with 120mm fans and replace PSU and the two 80mm fans at the back. My questions: 1. Let's say I plan to eventually pack this thing with 24 modern drives (I'm currently running 2TB but plan to migrate to 4TB when pricing comes down and unRAID 5.0 goes GA. What is the smallest size high quality PSU I can get? 750 watt? 650 watt? I want to get the smallest I can in order to get idle efficiency. I'm guessing that the server will run 70-100 watts at idle with the drives spun down for about 22 hours a day. This means it will be drawing less than 10-20% of the PSU capacity 90% of the time. This is at or below the lowest level measured in the 80plus program, and I know that if I'm looking for efficiency at that level it will help to "rightsize" the power supply and get the smallest that I need. 2. Does anyone know the absolute quietest 80x38mm case fans out there? Or failing that the best 80x25mm?
  4. I read an article saying that manufacturers expected the impact of the shortages to last through the end of 2012. I hope it's not true. In fact, I hope this accelerates manufacturers moving to ramp up manufacture of their bigger plattered drives so 3TB and 4TB drive prices are driven down faster. That and a GA release of 5.0 will trigger a serious upgrade of my array. I have to decide whether to keep my current chassis (15 drive max) or find a 20 drive chassis (non-rack mount). Maybe it's time to post over in the build forums.
  5. I picked this up earlier in the week so it's still on (or back on).
  6. Is my reading and 'rithmatic correct that I need 7.2 watts (say 10 if I'm being conservative) for each drive in my array if I want to support simultaneous spinup of the drives? Then again, maybe I should just watch my wall meter the next time I spin up my Unraid server...
  7. Are you folks preclearing the new Hitachi 5k3000 starting at sector 63 or 64? I think it doesn't matter but given that it doesn't matter which are you choosing to go with?
  8. We should start quoting our drive temps in degrees C above ambient so we can make sure we're comparing apples to apples. We should also remember to quote the drive types since the newest 5400 RPM green drives will be much cooler than older 7200 RPM drives. Also need to quote temps after a known load - for instance, after thermal equilibrium is reached 30 minutes into a parity check or something like that. My drives are running 28C to 30C in a room that's 23C. They are idle but not spun down. Wait, let me initiate a parity check and see what happens... The spun down drives started at 24C. After 2 min the drives are up to 25-27 3 min 26-28 5 min 26-29 7 min 27-29 9 min 28-30 10 min 29-30 12 min 29-31 15 min 30-32 60 min 34-36 90 min 35-37 note: lowest temp drive is the 5900 RPM 2TB Seagate green, highest temp is shared by my oldest 2TB WD EARS green and my ancient 7200 RPM 2TB Hitachi. updated note: the second highest temp at 60 min switched over to the WD EARS next to the 7200 RPM Hitachi. Maybe environmental? This is an array of Supermicro 5in3's with the fans undervolted to 5V. Case is an Antec 900 with two exhaust fans - top and back, both set to low. Side vent closed up.
  9. I've been sitting here considering biting on the new 2TB Hitachi 5K3000 HDS5C3020ALA632. Just out on Newegg for $80 AC until 2/7. 512 byte sectors so no issues with older Unraid builds. Anyway, I will probably pass until the marketplace burns in enough of these drives to identify all the issues. It's amazing how an issue was identified post-launch with virtually every 2TB consumer drive released to market so far.
  10. One point of significance about the WD 2TB Green drives is that they recently went from 500GB/platter to 667GB/platter (and thus down from 4 platters to 3 platters). There have been a number of revisions of the WD20EARS drive: WD20EARS-00S8B1 (I have 3 of these with serial numbers that start with WCAVY) WD20EARS-00J2GB0 (I don't have any of these but this vr-zone article describes the cosmetic differences between the S8B1 and J2GB0 revisions) and the latest 3 platter version: WD20EARS-00MVWB0 (i have 1 of these with a serial number that starts with WCAZA) It looks to me like everyone above is talking about the 3 platter MVWB0 revision with different serial number differences, so I want to draw the distinction between comparing different revisions of the same drive with different serial number prefixes for the same revision. I expect differences between my new 3 platter drive and my older 4 platter drives.
  11. lensman

    PicoPSU

    Here are two good reviews of the PicoPSUs with assorted compatible power bricks: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=207 http://www.silentpcreview.com/article601-page1.html
  12. Just wanted to let everyone know that I had the problem where I forgot to jumper my WD20EARS and put it in as a data disk in my array. I then decided to jumper it and had all sorts of problems. I checked and there weren't any partitions on it, but newly jumpered, I still couldn't start the array with it added. I tried using the WD diagnostics program (the Windows version). I couldn't write zeros with the drive jumpered (got errors). So I wrote zeros unjumpered. Then I jumpered the drive and put it back into my unraid server. No nice. Same problem where the array would not start. Got the same errors in the log as someone way above me in this thread. When I removed the jumper, I could start my array and the drive appeared as unformatted. I did not want to use it that way for the performance reasons that people are quoting. So as a last-gasp effort, I ran pre_clear.sh on it with the jumper on. This seems to have worked! It ran for 36 hours or so and pre-cleared successfully. I just added it to my array and formatted it (jumper still on). Have my fingers crossed, but I'd like to hear if this method works for anyone else.
  13. I'll second the recommendation of Seasonic as an alternative to Corsair. You can also go to any of the more hardware or silencing oriented sites for specific recommendations. I use silentpcreview and johnnyguru for power supply recommendations.