tucansam Posted September 29, 2012 Share Posted September 29, 2012 About to put two of these in my Newegg cart. WD30EZRX One will be parity and one will be data. This will be the start of my array until I copy data over and add some of the drives I already have laying around. Will run WD's utils on both, followed by several preclear passes, before copying data. I've read a bit about these drives, and some posts here as well. Just want to make one final post asking about any potential issues before I commit. Thanks. Quote Link to comment
dave Posted September 30, 2012 Share Posted September 30, 2012 Save $25/drive and order from here: http://www.mwave.com/mwave/SKUSearch.asp?scriteria=AA78374 Quote Link to comment
mikejp Posted September 30, 2012 Share Posted September 30, 2012 ...or here with free shipping http://us.ncix.com/products/?sku=62178&vpn=WD30EZRX&manufacture=Western%20Digital%20WD&promoid=1368 Quote Link to comment
wreck Posted September 30, 2012 Share Posted September 30, 2012 I have one as my parity drive now. It passed 2 pre clear cycles without issue and has been running great for a month. You could always get a bad one (as with any drive), but my experience has been good so far. Quote Link to comment
tucansam Posted September 30, 2012 Author Share Posted September 30, 2012 I have one as my parity drive now. It passed 2 pre clear cycles without issue and has been running great for a month. You could always get a bad one (as with any drive), but my experience has been good so far. Just ordered one, thanks. This doesn't have that 4096 byte format issue thing I've seen mentioned does it? Not need to jumper it? Quote Link to comment
distracted Posted September 30, 2012 Share Posted September 30, 2012 I have 5 of these, no issues so far but only 3 are in an array at this time. Don't forget to change/disable the idle3 timer using wdidle3. If you don't you can and will get excessive head parking under linux. Quote Link to comment
wreck Posted September 30, 2012 Share Posted September 30, 2012 I have one as my parity drive now. It passed 2 pre clear cycles without issue and has been running great for a month. You could always get a bad one (as with any drive), but my experience has been good so far. Just ordered one, thanks. This doesn't have that 4096 byte format issue thing I've seen mentioned does it? Not need to jumper it? No, no need for a jumper and it's >2.2gb, so no special options needed when you preclear. distracted: I didn't do this with mine. How can I check for the excessive head parking and what could it cause down the road? Thanks. Quote Link to comment
tucansam Posted October 1, 2012 Author Share Posted October 1, 2012 http://support.wdc.com/product/download.asp?groupid=609&sid=113 ? Is there one for each specific drive or series of drives? Do I have to do this to ALL the WD drives I buy? Fine, but I guess there really aren't any drives that "just work." Hrmph. In the last 25 years, I have never had to do anything with a hard disk other than plug it in and go, unless it was a SCSI ID or termination change. Quote Link to comment
tucansam Posted October 6, 2012 Author Share Posted October 6, 2012 I ended up using the -A option when I precleared based on other posts... Will this break something? I plan on preclearing a second and possibly a third time just to beat the drive up before I put data on it... Should I continue with the -A option or not? Quote Link to comment
wreck Posted October 6, 2012 Share Posted October 6, 2012 From what I've read the -A option is not needed on a drive >2.2gb. I ran 2 cycles on mine without the -A option and it is running just fine as my parity drive now. Quote Link to comment
tucansam Posted October 6, 2012 Author Share Posted October 6, 2012 Should I run the next two preclears without it? Have I done anything to mess up the drive (and if so, is it correctable)? Also, I used a tool to change the spindown delay to 300 seconds. Quote Link to comment
distracted Posted October 7, 2012 Share Posted October 7, 2012 http://support.wdc.com/product/download.asp?groupid=609&sid=113 ? Is there one for each specific drive or series of drives? Do I have to do this to ALL the WD drives I buy? Fine, but I guess there really aren't any drives that "just work." Hrmph. In the last 25 years, I have never had to do anything with a hard disk other than plug it in and go, unless it was a SCSI ID or termination change. Just the green drives, AFAIK. That same utility should work for all green drives. Quote Link to comment
atom Posted November 14, 2012 Share Posted November 14, 2012 Anyone remember how long it took to preclear a WD30EZRX? I have 3 of these and planning on running 3 passes on them. So just wondering if the below results look normal. ================================================================== 1.13 = unRAID server Pre-Clear disk /dev/sda = cycle 1 of 3, partition start on sector 1 = Disk Pre-Clear-Read completed DONE = Step 1 of 10 - Copying zeros to first 2048k bytes DONE = Step 2 of 10 - Copying zeros to remainder of disk to clear it DONE = Step 3 of 10 - Disk is now cleared from MBR onward. DONE = Step 4 of 10 - Clearing MBR bytes for partition 2,3 & 4 DONE = Step 5 of 10 - Clearing MBR code area DONE = Step 6 of 10 - Setting MBR signature bytes DONE = Step 7 of 10 - Setting partition 1 to precleared state DONE = Step 8 of 10 - Notifying kernel we changed the partitioning DONE = Step 9 of 10 - Creating the /dev/disk/by* entries DONE = Step 10 of 10 - Verifying if the MBR is cleared. DONE = Post-Read in progress: 36% complete. ( 1,097,252,352,000 of 3,000,592,982,016 bytes read ) 97.9 MB/s Disk Temperature: 30C, Elapsed Time: 28:22:56 ================================================================== 1.13 = unRAID server Pre-Clear disk /dev/sdb = cycle 1 of 3, partition start on sector 1 = Disk Pre-Clear-Read completed DONE = Step 1 of 10 - Copying zeros to first 2048k bytes DONE = Step 2 of 10 - Copying zeros to remainder of disk to clear it DONE = Step 3 of 10 - Disk is now cleared from MBR onward. DONE = Step 4 of 10 - Clearing MBR bytes for partition 2,3 & 4 DONE = Step 5 of 10 - Clearing MBR code area DONE = Step 6 of 10 - Setting MBR signature bytes DONE = Step 7 of 10 - Setting partition 1 to precleared state DONE = Step 8 of 10 - Notifying kernel we changed the partitioning DONE = Step 9 of 10 - Creating the /dev/disk/by* entries DONE = Step 10 of 10 - Verifying if the MBR is cleared. DONE = Post-Read in progress: 38% complete. ( 1,153,184,256,000 of 3,000,592,982,016 bytes read ) 96.7 MB/s Disk Temperature: 29C, Elapsed Time: 28:20:58 Quote Link to comment
tucansam Posted November 14, 2012 Author Share Posted November 14, 2012 Those times and speeds are consistent with my preclears on the same model drive. Quote Link to comment
atom Posted November 15, 2012 Share Posted November 15, 2012 Those times and speeds are consistent with my preclears on the same model drive. So 48h or so for 1 pass? Console shows: ================================================================== 1.13 = unRAID server Pre-Clear disk /dev/sda = cycle 1 of 3, partition start on sector 1 = Disk Pre-Clear-Read completed DONE = Step 1 of 10 - Copying zeros to first 2048k bytes DONE = Step 2 of 10 - Copying zeros to remainder of disk to clear it DONE = Step 3 of 10 - Disk is now cleared from MBR onward. DONE = Step 4 of 10 - Clearing MBR bytes for partition 2,3 & 4 DONE = Step 5 of 10 - Clearing MBR code area DONE = Step 6 of 10 - Setting MBR signature bytes DONE = Step 7 of 10 - Setting partition 1 to precleared state DONE = Step 8 of 10 - Notifying kernel we changed the partitioning DONE = Step 9 of 10 - Creating the /dev/disk/by* entries DONE = Step 10 of 10 - Verifying if the MBR is cleared. DONE = Post-Read in progress: 91% complete. ( 2,737,373,184,000 of 3,000,592,982,016 bytes read ) 65.1 MB/s Disk Temperature: 31C, Elapsed Time: 45:35:06 But unMenu shows: Post-Read (1 of 3). 91% @ 28 MB/s (45:32:45) Note the difference in speed. Quote Link to comment
mikejp Posted November 15, 2012 Share Posted November 15, 2012 For comparison sake only, here is the report of the last one of these I precleared... == invoked as: /boot/preclear_disk.sh /dev/sdu == WDC WD30EZRX-00MMMB0 WD-WCAWZ1992269 == Disk /dev/sdu has been successfully precleared == with a starting sector of 1 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 8:45:22 (95 MB/s) == Last Cycle's Zeroing time : 8:12:05 (101 MB/s) == Last Cycle's Post Read Time : 18:46:29 (44 MB/s) == Last Cycle's Total Time : 35:44:56 == == Total Elapsed Time 35:44:56 == == Disk Start Temperature: 24C == == Current Disk Temperature: 30C, Quote Link to comment
atom Posted November 15, 2012 Share Posted November 15, 2012 For comparison sake only, here is the report of the last one of these I precleared... == invoked as: /boot/preclear_disk.sh /dev/sdu == WDC WD30EZRX-00MMMB0 WD-WCAWZ1992269 == Disk /dev/sdu has been successfully precleared == with a starting sector of 1 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 8:45:22 (95 MB/s) == Last Cycle's Zeroing time : 8:12:05 (101 MB/s) == Last Cycle's Post Read Time : 18:46:29 (44 MB/s) == Last Cycle's Total Time : 35:44:56 == == Total Elapsed Time 35:44:56 == == Disk Start Temperature: 24C == == Current Disk Temperature: 30C, What unRAID version and were you simultaneously preclearing multiple drives? I found a thread where other people are having a similar issue to me. The issue appears to be simultaneously preclearing multiple drives on RC8 http://lime-technology.com/forum/index.php?topic=23573.msg207804#msg207804 Quote Link to comment
mikejp Posted November 15, 2012 Share Posted November 15, 2012 It was running at the same time as this one on RC8a == invoked as: /boot/preclear_disk.sh /dev/sdt == WDC WD30EZRX-00MMMB0 WD-WCAWZ1974146 == Disk /dev/sdt has been successfully precleared == with a starting sector of 1 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 8:52:08 (93 MB/s) == Last Cycle's Zeroing time : 8:37:29 (96 MB/s) == Last Cycle's Post Read Time : 18:59:17 (43 MB/s) == Last Cycle's Total Time : 36:29:54 == == Total Elapsed Time 36:29:54 == == Disk Start Temperature: 25C == == Current Disk Temperature: 28C Quote Link to comment
tucansam Posted November 15, 2012 Author Share Posted November 15, 2012 Hmmm... No. Mine were right around 38 hours and I was getting 70-80MB/s Quote Link to comment
atom Posted November 15, 2012 Share Posted November 15, 2012 I just did a single preclear @ 45h. Looks like the post read is what's slow. So is this necessarily an issue? ========================================================================1.13 == invoked as: ./preclear_disk.sh /dev/sda == WDC WD30EZRX-00MMMB0 WD-WMAWZ0333927 == Disk /dev/sda has been successfully precleared == with a starting sector of 1 == Ran 1 cycle == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 9:20:54 (89 MB/s) == Last Cycle's Zeroing time : 8:27:11 (98 MB/s) == Last Cycle's Post Read Time : 27:30:18 (30 MB/s) == Last Cycle's Total Time : 45:19:25 == == Total Elapsed Time 45:19:25 == == Disk Start Temperature: 31C == == Current Disk Temperature: 30C, == ============================================================================ ** Changed attributes in files: /tmp/smart_start_sda /tmp/smart_finish_sda ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE Temperature_Celsius = 122 121 0 ok 30 No SMART attributes are FAILING_NOW 0 sectors were pending re-allocation before the start of the preclear. 0 sectors were pending re-allocation after pre-read in cycle 1 of 1. 0 sectors were pending re-allocation after zero of disk in cycle 1 of 1. 0 sectors are pending re-allocation at the end of the preclear, the number of sectors pending re-allocation did not change. 0 sectors had been re-allocated before the start of the preclear. 0 sectors are re-allocated at the end of the preclear, the number of sectors re-allocated did not change. ============================================================================ EDIT: Results from a 3 cycle run are faster..? ========================================================================1.13 == invoked as: /boot/preclear_disk.sh -c 3 /dev/sdd == WDC WD30EZRX-00MMMB0 WD-WCAWZ2350602 == Disk /dev/sdd has been successfully precleared == with a starting sector of 1 == Ran 3 cycles == == Using :Read block size = 8225280 Bytes == Last Cycle's Pre Read Time : 9:19:38 (89 MB/s) == Last Cycle's Zeroing time : 8:39:37 (96 MB/s) == Last Cycle's Post Read Time : 28:37:00 (29 MB/s) == Last Cycle's Total Time : 37:17:39 == == Total Elapsed Time 123:17:21 Quote Link to comment
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