Rajahal

Zotac ZBOX-ID41-PLUS-U Intel NM10 2 x 204Pin SO-DIMM Next Generation NVIDIA ION (w/512MB DDR3 memory) Black Mini / Booksize Barebone System $289.99 $30 promotional gift card w/ purchase, ends 9/19 If you are looking for a DIY HTPC, this one is my favorite. Just add RAM, SDD/HDD/SDHC, a remote control, and OpenElec.

As I understand it, X-case is just Norco rebranded for the European market. It looks like they may be swapping out the drive trays for something different (red instead of blue), but otherwise those cases look identical.

The Norco 4220 is full height. Contact Supermicro and ask for some full-height brackets. If you are lucky like me, they'll send you some for free!

Hello all, We're helping a customer who is having an odd issue with his server: data seems to be missing from his disk and user shares. disk6 appears empty when viewed as a disk share, yet the unRAID disk stats report it as half full: 'Show hidden files and folders' is enabled. We checked for any incorrect share configurations, but found nothing. All user shares are configured normally, and there's no user share named 'disk6' or anything funny like that. The customer specifically cited an individual file that went missing, an episode of the show Burn Notice. When I connected to his TV user share, I could access all folders except for 'Burn Notice'. When accessing that particular folder, I received a 'permission denied' error. We checked the permissions across the server, and on disk6 in particular, and all seem to be normal (see the screenshots below). We then suspected file system corruption, and it appears that we may be right about that. We tried the standard reiserfsck (instructions here), which reported a missing superblock. We then tried to rebuild the superblock (using the exact settings documented here), followed by another reiserfsck as instructed. The second reiserfsck reported the same error: missing superblock. Here's the transcript of the entire session, first checking permissions, then running the reiserfsck, superblock rebuild, then final reiserfsck: This server is running unRAID 5.0-beta-14, and the problem disks are 3 TB Seagate Barracuda XT ST33000651AS. Here is a thread dedicated to issues with this particular model of drive and unRAID betas. In this post Joe L. recommends upgrading to unRAID 5.0rc6-test2. We believe that this may be the next step, but are hesitant to suggest an unRAID OS upgrade when a potentially corrupted file system is present. Full syslog attached (wrapped due to error logging, unfortunately missing the boot info). Your thoughts? Thank you kindly. - Stephen (Rajahal) & Kyle (prostuff1) syslog-2012-31-8.zip

New Defcon Special build (finally) posted! 16 Drive Defcon Build This is our beefiest server yet, sporting a Quad Core Xeon CPU, Intel server motherboard, and 4 GB of RAM right out of the box. There's also two optional 2.5" bays (bringing the total to 18 drives) for your cache and apps SSDs! Based on enterprise-quality Rackable Systems hardware, these servers lived a former life in Amazon's data centers running their EC2 cloud service!

This is a pretty fascinating talk on how to use porn (or any images and sounds) to guide you in recovering a RAID 5 array with more than one disk failure. Naturally, none of this applies to unRAID, but I think it does a good job of explaining the concept of RAID 5 (and distributed parity in general) in a visual and easy to understand manner (assuming a certain level of geek knowledge, of course). Pretty fascinating to see the actual striping structure of RAID 5 show up in garbled images! The talk is 48 minutes long. Feel free to skip the intro stuff about other RAID types (start at about 27 minutes in), or skip to the live demo (start at about 37 minutes in).

None at this time.

The Hitachis are my favorite, but any will work. Sent from my DROID2 using Tapatalk 2

I like to replace the fans with these for a quiet build: Coolink SWiF2-801 80 x 25mm Hydro-Dynamic Bearing Fan - (1500RPM/31.5ml/h/11dBA) They may not provide enough cooling for hot running 7200 RPM drives, but for green drives they are great.

They fit, but they strip the Norco's screw holes a bit. For future builds, I've decided that it is better to use the Norco-provided screws instead of the Antec thumb screws. They don't look as nice, but they do a better job of holding the cages securely.

The Socket FM1 processors severely limit your choice of motherboard. AM3 is still the most popular. The power savings of the A4 would be a nice match for a lower power server, though.

jowi, Raptor, Influencer, and everyone else who has chimed in on jowi's original questions: Thank you for posting all of the detailed accounts of your testing and data to back it up. I apologize for not jumping in sooner, but I've found that between my business and other pursuits my time for these forums has dropped to once per week at best (but I'm trying to improve that!). From the past few pages' detailed discussions it is clear to me that the Atom's CPU speed is slow enough to cripple a modern SSD's performance as an unRAID cache drive. This is crucial knowledge for anyone looking to build a low power yet zippy server, so I'll post this information on the first post of this thread and do my best to spread the knowledge elsewhere. I encourage you intrepid souls to take this information to the wiki in the 'hardware compatibility' section! Also, I think Raptor has set the new cache drive write speed record here! I've also updated the first post to link to those results.

I haven't read this whole thread, just your latest revision. A few quick comments: - The motherboard has a single USB port built-in, so you will only need one of the USB headers. - A Corsair 850W PSU will work just as well and may be cheaper, but it is not modular. - I like to use these 120mm fans, but they may not be powerful enough to cool a full load of 7200 RPM drives. I'm not sure why you need a SATA expander card, but again I didn't read the whole thread.

I'm currently at Defcon 20 in Vegas. If anyone else is here, tweet me @unRAJ.

This topic has been moved to General Support. [iurl]http://lime-technology.com/forum/index.php?topic=21499.0[/iurl]

I re-read my post (#190) and I think the argument still stands, so I won't edit it. Essentially all I said was 'don't fix what ain't broken'. However, a few months after posting that I did actually start to see the LCC problem with my drives! I documented my experience in this thread. I have not seen any problems with EARX drives, only with EARS drives. However, I only have one or two EARX drives in operation, so that's not a very large sample size.

Nice build, and great pics!

That motherboard takes DDR3 RAM, not DDR2. 2 GB is plenty for a simple NAS, so no need for 4 GB if that helps you save a bit of money. Other than that, this looks like a nice simple build!

I use the screws provided by Norco for this reason. Since they don't give you enough for the cages and the drive trays, you have to buy more: link. $10 for a bag of screws is pretty ridiculous, but they are the only ones I've found that are proven to work.

In response to a PM from Hypknox: Your PSU is fine. As others said, you'll have about 50A of draw with 3A to spare. I agree with the others that your UPS is too small. This should be a better fit: http://www.apc.com/resource/include/techspec_index.cfm?base_sku=BR1000G I use the above for my entire home entertainment center. Great unit. It is difficult to size a UPS to a server without actually measuring the server's power consumption using a Kill-A-Watt or similar device, but I believe the above UPS should be a safe bet.

Thanks for the response. I was PMed by another member who does have some brackets that will work for me.

Correct, that's a good choice. Either Athena or iStar should work as long as the specs are good. The fan may be a bit loud though - another downside of 2U gear.

Do you happen to know if these will fit the Supermicro AOC-SASLP-MV8? I have a few open box ones that didn't ship with brackets. My measurements do indicate a distance of 54mm between the center of each screw hole, so it seems like they will work.

Hmm, an interesting design. First off, since you say 'price is a definate factor here,' I feel obligated to point out that unless you are a metal worker and have access to the appropriate tools, any custom designed chassis will be quite expensive. Whenever I've looked into custom cut sheet metal for projects like these the price quote has been around $300 USD. Replacing your rack may be cheaper. Just sayin'. Moving on, I think your airflow design could be better. Fans blowing hot air against the CPU/mobo area are just going to cause that air to bounce around and not really go anywhere. The vents up top will help, but I think adding a fan or two to the top rear vent area will greatly improve the airflow. Sure, heat rises on its own, but with the current fan placement I think the airflow will be pretty jumbled. A large fan or two pulling the hot air out through the top of the case will allow a much more streamlined approach. Another approach would be to consider the CPU/mobo area a cool air intake, flip the drive cage fans around, and vent hot air out the front. I expect the stock fans will be fine. The Xigmatek cages appear to have a decent amount of air intake in the front. Just keep those dust filters clean! I also don't think the lower intake vents are going to help much. They will just allow cool air to bypass the drives/cages, run past the CPU/mobo (which could be a good thing), and vent out the top. I would probably start with no lower vents and just trust the Xigmatek cages to allow enough airflow. If you plan to run a hot CPU/mobo, then venting around the mobo/PSU area would help. However, in most of the servers I've worked with the heat generated by the drives is a much bigger problem than the heat generated by the CPU/mobo. Just stick to 120mm fans and the noise should be pretty manageable. Avoid smaller fans.

That Athena Power PSU offers only 11A for HDD power, which means that it is only good for 5 Green drives and even fewer 7200 RPM drives. It won't work for 12 drives. Look for a 2U PSU with a large single +12V rail. They are hard to find (I know, I've looked), but Newegg should have a few. I know you've already purchased the new chassis, but if you have the option of a 3U or 4U chassis things will be much easier for you.