dima

Hi folks, just want to share my successful (I hope) story: Using latest rc6 test build: I have 3 "Hitachi Deskstar 4TB 7200 rpm" installed in simple old box (Intel duo 2.2 Mhz, 2 GB Ram, 4 built-in SATA-2, 300 W PS). Before starting array, unRAID recognized 2 data disk as green OK status, but parity disk was red DISK_INVALID. Starting preclear shows that process will start from sector 63 and it will NOT be 4K... so I did NOT preclear from console. Start reading forum and getting even more confused what to do, so I just press "start" and left it overnight running. The process of parity sync (or whatever) take about 410 minutes total (I was thinking about days of waiting) and syslog shows some errors, like unable to mount disk and invalid fs. At the morning all disk appear in green status OK, no sync errors. I've stopped and restart array - everything is green and no errors in the log. Just to be sure, I've started "Parity check" process (with checked "Correct errors" check-box) and so far everything is looks good (170 MB/s, 370 minutes to complete). SO if any of you see something wrong is going on, let me know, please. I assume that system correct all errors during night process and all zeros are written correctly on all drives. BTW: temperature on drives 44-45 C. Is this normal ? Update: "Parity check" process has finished. No errors. All disks - green status. 8 TB was checked for less than 6 hours. I've rebuild the box, closing all "default" ventilation openings on sides, front, back. Cut an opening in front for HDD only (for straight air flow), added one more controllable 80 mm fan on back. Set it for quiet spinning. Start array. Disk temperature now is 33-34 C on idle.