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Everything posted by wsume99

  1. My background is in reliability so I do know a thing or two about the bathtub curve. Many manufacturers will do ESS (Environmental Stress Screening) or HASS (Highly Accelerated Screening) on their products before shipping them. However since hard drives are a commodity I doubt that any of them do it. Maybe on their enterprise products which carry a higher price. The intent is to stress the products so that latent mtg. defects will be found prior to operational use. Essentially they truncate the front part off the bathtub curve so that all the customer is exposed to is a constant, very low (hopefully) failure rate for many years prior to climbing up the other side of the bathtub curve which would be associated with failures due to wearout. Your preclear process is essentially a form of HASS. We're stressing the drive to determine if there are any defects - the thought being that if it lasts X number of hours without failure (i.e. SMART errors) then it should last a long time. The only problem is that most companies tailor the length of their ESS or HASS tests based upon their knowledge of the bathtub curve specific to their device. Since we lack that knowledge all we can do is guess. I'd say that something like 50-100 hours would be reasonable, so the number of recommended cycles would vary depending upon the size and speed of your drive. You are right and like I said above, stressing the drive will get you into the constant, very low failure rate portion of the bathtub curve. There is no such thing as a failure rate of zero. But you can always just skip the several cycles of preclear and install your drives fresh out of the box. Let me know how that works out for you.
  2. I don't think I've seen this question answered yet in this thread... How many times should preclear be run on a new drive? Should I run it once and if nothing unusual pops up in the SMART reports then stasrt using it. If the drive is going to be problematic does it usually show signs from the very beginning or are more cycles needed to weed out the bad drives before putting them into service?
  3. Wow. I read all 16 pages of the thread that is used for posting preclear results. VERY HELPFUL! Yep my drive is fine, although I'm going to run preclear again just to be safe. I'm wondering, do you run smartctl regularly (monthly) and log the reports to track drive health over time?
  4. I misinterpreted what you meant in the 2nd edit of your first post in this thread. That is why I thought that smartctl wasn't working properly because I thought the version I am using would be affected. I think I found the thread that discusses the preclear SMART reports you were talking about here.
  5. Last night I installed my new WD Black 1TB drive (WD1001FALS) and ran a preclear on it overnight. My syslog file is attached. Two questions... 1) It looks to me like the smrtcrtl is not installed. I'm running unRAID Basic v4.5.6. I'll have to read more about installing that. 2) Can anyone tell me what the smart report is telling me WRT Raw_Read_Error_Rate and UDMA_CRC_Error_Count and if it's anything to be worried about. I'm guessing I'll be told to fix #1 then rerun preclear a few times but wanted to get some input from the experts here. syslog.txt
  6. Well I found a plug-in that does wake-up the server when I launch MCE but it was a waste of time because Windows 7 MCE will not record to a network drive. Oh well, I guess I'll have to move the shows after they are recorded to a local drive. I plan on migrating to SageTV anyways once I get my server squared away.
  7. That works only when I launch Media Center by clicking on the icon that runs the .bat file. It doesn't work when Media Center wakes the computer from sleep to start a recording. I'm still searching for a way to do it in Media Center with some sort of plug-in or perhaps an automated task.
  8. Thanks for the detail but I was talking about what do I need to do on my win7 machine to run the wakeup.exe file whenever I launch Media Center. I need to run that file so that it'll send the magic packet to my unRAID server so my HTPC and record shows on the server. Otherwise I have to run it manually before I can record a show which kind of defeats the whole purpose of scheduling recordings.
  9. LOL - I was just reading that exact post and the script (trying to find an answer to my question below) trying to figure out if I should do s2ram or s3. I think I'll give it a try to see how it works. Maybe you can answer this question for me. My HTPC uses Media Center in Win 7. How do I get the server to wake up whenever Media Center is opened on my HTPC? There is a post on that thread that shows How to wake up your unRAID box from an Ubuntu pc. However I'm not using Ubuntu and it would wake the server anytime the PC is on. I don't want to do that because my HTPC is also used by others in my house for other things. So I only want to wake the server when Media Center is opened that way it will stay asleep when I'm surfing the net or using Photoshop or any other activity that does not need to access the server.
  10. Alright, got it working now. Here is what I did. 1) Cold boot, checked network speed with ethtool eth0 command using telnet. Supported link modes are 10/100/1000 and advertised link modes are 10/100/1000 with the negotiated speed being 1000 Mbps - just like I want. 2) Put server to sleep via telnet using echo 3 >/proc/acpi/sleep command and the send WOL magic packet using my Wakeup.bat file. Once server wakes I check network speed again with ethtool eth0 command using telnet. Supported link modes are 10/100/1000 but now advertised link modes are 10/100 with the negotiated speed being 100 Mbps - not what I want. I repeated this sleep-wake sequence five times and got the same result each time, but this was using the manual process so next I tried the automated sleep process that uses the script. 3) Created the script, making sure that the ethtool -s eth0 speed 1000 was in there as peter_sm suggested, and placed it in /boot/custom/bin just like the guide says. Then added the necessary lines to the scrip to initiate the script at boot. Rebooted and checked network speed - 1000Mbps. Spun down the drives and waited for server to go to sleep. After the server was in sleep mode (confirming my and edits worked) I sent the WOL magic packet using my Wakeup.bat file. After waking I checked network status using telnet command again. Supported link modes are 10/100/1000 and now advertised link modes are 10/100/1000 with the negotiated speed being 1000 Mbps - awesome. I repeated this sleep-wake sequence five times and got the same result each time. So I'd say it works now. Just a note. The s3 script text listed in step 8 on the S3 and WOL Wiki page did include the ethtool -s eth0 speed 1000 command but the author's script file that he provided a link to DOES NOT (I guess he did not copy it verbatim like he says). So if you are reading this post because you followed the guide, used the author's script file, and are not getting 1000Mbps speeds then check your script file. Thanks to bubbaQ and peter_sm for the help.
  11. I just got my first system up and running and I'm trying to get sleep (S3) and WOL working. I followed the instructions here. Everything went fine until I got to step 6 and began testing my system. I have the exact issue that the author mentions in his note. My system wakes from sleep with a 100Mbps connection instead of 1000Mbps like it does from a cold boot. The guide does not mention any solutions and I haven't yet found any posts in the forum that cover this. Does anybody know how to fix this? I'd really like to put my system to sleep when it's not in use. I'm using a Gigabyte GA-MA785GM-US2H motherboard with a built-in Realtek 8111C LAN controller.
  12. Looks good. I especially like the What makes a motherboard suitable for unRAID? section. I think you captured most of the things I was considering. Not to beat a dead horse but another question with regards to HPA. Let's assume that the builder checks his BIOS and decides that his board is not impacted by HPA, but in reality it is and it's enabled. I'm assuming that the compatibility check you outlined will not flag this as a problem because as I understand it HPA does not cause a problem until you start adding disks to the array. I guess what I'm saying is that I don't think you can underestimate the importance of checking for HPA. Because if the builder misses it then they are in for a big headache. Also, I own two different Gigabyte boards and both have HPA and it's disabled by default on both of them. Also I find the HPA setting in the exact same menu on both boards. The HPA setting is located in the Advanced BIOS Features section. The setting is titled Backup BIOS Image to HDD. I don't know if it's in the same location in all Gigabyte BIOSes (is that even a word) but I'd say it probably is on many. So you might want to revise that part of the section to include this detail for Gigabyte boards since the problem is mostly isolated to them and it'll probably help people to find it. One last thing ... in another post about this topic a member told me that it seems as though Gigabyte has got the message and stopped enabling HPA by default. This seems to be a valid statement as my boards, purchased in Feb 2009 and July 2010, both are disabled by default from the factory and you mention that loading the newest BIOS for the board may correct the issue. So you may want to mention this fact that it looks as though Gigabyte is recognizing this problem and the newer boards and/or BIOS releases appear to correct the issue. Bottom line - great job. It's users like yourself that give me confidence that I can make unRAID work. I feel like there's nothing that I can't get answered in this forum. Sure unRAID is a wonderful product but it's the online support that gave me (and probably many other users) the confidence to try it.
  13. You might want to take my advice with a grain of salt - remember I overlooked the HPA comment when it was right under my nose. BUT ... I'd suggest that you put it in the Motherboard section of the Hardware compatability Wiki page. The first bullet point actually indicates the need to confirm MB compatability if you're planning to use a board you already have. So I'd suggest that you place a compatability assessment guide/tool there, which BTW I think would be VERY USEFUL. The first bullet seemed to be pointing me to the MB table just below. The only problem was that my existing board was not listed. So I thought well how about one of the official boards maybe I'll just buy one of them if they're not too expensive. Then I discovered that the official boards were not available retail - dead end there. So I went back searching the forums (which led me to this post) for info on gigabyte boards to see what people were saying and maybe I could determine if my board was acceptable. Worst case is that I'd be unsucessful using h/w I already own so it's not like I was going to loose money and if it worked the I'd avoid having to buy an 'official' board. My plan is to start with the basic version and get up and running using my existing h/w, then upgrade to the pro version and add a cache disk, then upgrade to a better MB when needed. That was my noob perspective. Hope that helps.
  14. I'm only aware of the HPA issue because of this forum. I wanted to reuse something I already had so I did a little research. Even with all that research I overlooked the note in the Motherboard section of the Hardware Compatability Wiki page and the Gigabyte HPA link provided there. You should also be aware that some people might purchase the recommended board because they think that their board is not suitable, which was my initial thought. However most of the recommended options in the MB chart are unavailable now for retail purchase - which forced me to do a little more homework on my exisitng MB options. Now I know I can use my existing MB (while not ideal, but acceptable for a smaller system) and save my money for an ATX board with 8 SATA ports and 3+ pcie slots when I need to expand.
  15. Just FYI - you might consider that MB in a combo deal with the Sempron 140 for $85 plus $10 MIR. You'd be getting a brand new processor for only $8 more. I don't think that two cores would benefit you that much but the Sempron would be more efficient (45W TDP vs. 65W). Heck you might even get lucky an be able to unlock the extra core on the Sempron, but I don't know if that board supports ACC.
  16. Noob here and I actually am preparing to build my first system so I would consider myself to be in the category of the people you are trying to help. I'd like to use a Sempron 140 and Gigabyte board (GA-MA785GM-US2H) that I already own. Earlier in this thread it was mentioned that Gigabyte boards have issues with HPA and are incompatible with unRAID. The default setting in my BIOS for HPA is "Disabled" meaning I should have no problems using this board. That said, why would you summarily exclude or include any MB mfg? Shouldn't each board be evaluated on a case by case basis looking at the merits of each one individually? I would argue that by excluding Gigabyte boards you did not consider the board I have, which in my opinion seems to be a good canidate. Right now you can get it and the Sempron 140 for $93 at Newegg as a combo. Plus it takes DDR2 memory which a lot of people would likely have laying around. Also it is an AM3/AM2+/AM2 chipset so it would be compatible with more older chips than the ASUS M4A78LT-M LE that you suggested. The only advantage I see to the ASUS board is that it has 6 SATA ports vs. 5 SATA & 1 eSATA on the Gigabyte board. Anyhow, just my 2 cents.
  17. Thanks Joe for the reply. I've been doing more searching and found the FAQ page - it helped A LOT. Tons of useful info there. With regards to your reply to #6. Here is the description from the manual.. Backup BIOS Image to HDD Allows the system to copy the BIOS image file to the hard drive. If the system BIOS is corrupted, it will be recovered from this image file. (Default: Disabled) I checked the setting on my board and it is currently set to 'Disabled'. I know that I've never changed it so it must be true that it's default setting is in fact 'Disabled'. That said, if the CMOS battery dies then the BIOS would be reset to all Default values and it would not write a BIOS image to any of the HDDs, correct? The only way this would ever happen is if I changed the setting to Enabled. So it would seem that I might be ok to use this board without living in constant fear of a dead CMOS battery. Also, is the Backup BIOS Image to HDD feature I'm asking about the same as the the HPA issue discussed here that makes some users dub Gigabyte boards as "unRAID poison"?
  18. Noob here and I just want to confirm what I believe I've read in some of the other posts. First let me say that I am thoroughly impressed by the quality of this forum and the support that is provided here. It's refreshing to see, kudos to lime-tech! My main objective is to build a server to serve as the primary storage location for my music, DVDs, and recorded TV from my HTPC and as a backup for photos/home videos. The primary storage location for the photos/home videos will be my main desktop. So my objective is to have a stable, hassle-free, low maintenance, upgradeable home server. I think that unRAID will fit the bill but before I take the plunge I'd like to confirm the stability/fault tolerance of unRAID. 1) If I use a parity drive the system can lose any SINGLE HDD without losing any data, correct? 2) If more than one drive fails the data lost is isolated to what was resident on the failed drives, correct? 3) The software is registered to the USB drive it is first installed on, what happens if the USB drive fails? Is my data secure? Do I have to purchase another license? 4) If I have an operable system and want to upgrade the MB is this possible without losing any data or offloading the files to another system first? 5) Is there any advantage to having the parity drive as a RAID 1 array? I'm thinking not much. Basically requires that you loose a data drive and both parity drives before data is lost, correct? Is this even possible? I'm guessing it would probably slow down writes to the server. 6) I have a spare Gigabyte board (GA-MA785GM-US2H) I'd like to use. I assume it's ok so long as I disable the BIOS feature that writes an image of the BIOS to the HDD, correct? I'm sure I'll have more questions to come but my plan is to start with the basic version to make sure I can get everything to play together and then upgrade to the pro version and add a cache disk once I've got everything up and running. Any advice would be appreciated. Thanks in advance for all your help.