February 5, 201610 yr Hi all, i have recently embarked on building an unraid server - its v6 and the config consists of 6 drives ssd cache drive 6tb parity drive 2tb storage 2tb storage 6tb storage 6tb storage into week 3 of the server i got hold of another 6tb drive , so i thought of replacing one of the 2tb ones with the new one. so i decided to swap the disk on slot3 - the disk had no data. i shut down the array , powered off the server replaced the drive and powered back on the server. ( i did not empty the slot before powering off the server...) When the server was powered on , in slot 3 i immediately got to see a red cross with the message device is disabled , contents emulated. i was able to select the 6tb drive and start the array , with the message to rebuild and expand the raid . however the drive remained disabled. looking at the log at that time i noticed that the 6tb disk had some read errors. so that one went back to Western Digital. i attempted to reinsert the original drive , but i got the message that i cannot replace it as the capacity was less than the drive its replacing. now i got hold of another brand new 6tb drive - with no errors but when i select this one , the array does not even attempt to rebuild or expand. the slot is constantly disabled. this is what i see in the syslog : tjhe drive that i am replacing is the sdc - but somehow the original 2tb drive is still present in the config. Feb 4 17:40:01 Tower emhttp: WDC_WD60EFRX-68MYMN1_WD-WX11DA4DJT2J (sda) 5860522584 Feb 4 17:40:01 Tower emhttp: Hitachi_HDS722020ALA330_JK11A1YAJMY5WV (sdb) 1953514584 Feb 4 17:40:01 Tower emhttp: Hitachi_HDS722020ALA330_JK1180YAJ03MMT (sdc) 1953514584 Feb 4 17:40:01 Tower emhttp: WDC_WD60EFRX-68MYMN1_WD-WX21D25HEVCS (sdd) 5860522584 Feb 4 17:40:01 Tower emhttp: WDC_WD60EFRX-68MYMN1_WD-WX11DC4FKVUZ (sde) 5860522584 Feb 4 17:40:01 Tower emhttp: Samsung_SSD_840_EVO_120GB_S1D5NSAF206371P (sdf) 117220824 Feb 4 17:40:01 Tower emhttp: array slots: 6 Feb 4 17:40:01 Tower emhttp: cache slots: 1 Feb 4 17:40:01 Tower kernel: mdcmd (1): import 0 8,0 5860522532 WDC_WD60EFRX-68MYMN1_WD-WX11DA4DJT2J Feb 4 17:40:01 Tower kernel: md: import disk0: [8,0] (sda) WDC_WD60EFRX-68MYMN1_WD-WX11DA4DJT2J size: 5860522532 Feb 4 17:40:01 Tower kernel: mdcmd (2): import 1 8,16 1953514552 Hitachi_HDS722020ALA330_JK11A1YAJMY5WV Feb 4 17:40:01 Tower kernel: md: import disk1: [8,16] (sdb) Hitachi_HDS722020ALA330_JK11A1YAJMY5WV size: 1953514552 Feb 4 17:40:01 Tower kernel: mdcmd (3): import 2 8,48 5860522532 WDC_WD60EFRX-68MYMN1_WD-WX21D25HEVCS Feb 4 17:40:01 Tower kernel: md: import disk2: [8,48] (sdd) WDC_WD60EFRX-68MYMN1_WD-WX21D25HEVCS size: 5860522532 Feb 4 17:40:01 Tower kernel: mdcmd (4): import 3 0,0 Feb 4 17:40:01 Tower kernel: md: disk3 removed Feb 4 17:40:01 Tower kernel: mdcmd (5): import 4 8,32 1953514552 Hitachi_HDS722020ALA330_JK1180YAJ03MMT Feb 4 17:40:01 Tower kernel: md: import disk4: [8,32] (sdc) Hitachi_HDS722020ALA330_JK1180YAJ03MMT size: 1953514552 Feb 4 17:40:01 Tower kernel: mdcmd (6): import 5 0,0 what can i do ? can i remove the drive from a config file? i already have 6tb of data on the raid , which i do not want to loose :-( Thanks, Sergio Fiorenza
February 5, 201610 yr If you sure that the disk was empty, you can make a new config, from settings menu (remember your disk assignment) Then reassign all the disk again... with the new disk, be award of that you get your parity right, otherwise you Will lose data. Run a parity check when your done.
February 6, 201610 yr Author yes the disk i am replacing was empty. but by creating a new config will i loose the shares that i made and all the apps and plugins?
February 6, 201610 yr Community Expert Nothing will be lost. You will just have to assign all your drives again and let parity rebuild. Be very sure you don't assign a data drive to the parity slot! Possibly all the trouble you have had was just due to bad connections but we'll never know. Check all connections before starting again, and if you have any more trouble, go to Tools - Diagnostics and post the complete diagnostics zip so we can have a better chance of telling you what went wrong.
February 6, 201610 yr Author ok thanks all for the info - its doing a parity check and format as we speak - new disk is being recognized in any case. will update once all operations are done.
February 6, 201610 yr Community Expert ok thanks all for the info - its doing a parity check and format as we speak - new disk is being recognized in any case. will update once all operations are done. Should be doing a parity sync or build. A parity check is what you need to do after the parity sync is completed to check that it was good.
February 7, 201610 yr Author yes - you r right - it was doing a parity sync . parity check also done . all working fine now. thanls again for the help.
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