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Hi! Decide to upgrade file storage to RAID5 with 3x2TB WDC WD20EARS. Actually my first experience with RAID. Done everything according manual, RAID working, but sooooo slow! File copy to RAID is about 100KB/s Code: Select all Source video/srt.avi lighting world Target /raid/video/srt.avi    [                                        ]  36% ETA 0:03.24 (94.85 KB/s) â â â â â â â â â â â â â â â Total: 66M of 253M   â â â â â â â â â â â â â    [                                        ]  26% Files processed: 1 of 2 Time: 0:10.21  ETA 0:29.37 (108.17 KB/s) Speed from RAID is good (cannot say for sure, but copy back in a second) I know, that RAID5 is not so fast on write operations as RAID0, but no so. I use FreeBSD 8.1-RELEASE, custom kenel. lighting world Platform - Intel E3400, Gigabyte GA-G31M-ES2L, 2Gb RAM, WDC WD5000AAKX as system drive. Gvinum output is: Code: Select all gvinum -> l                          lighting world                                       lighting world   3 drives:                            lighting world   lighting world                                       D hdd1                  State: up       /dev/ad1        A: 1/1907728 MB (0%) D hdd2                  State: up  lighting world      /dev/ad2        A: 0/1907727 MB (0%) D hdd3                  State: up       /dev/ad3        A: 1/1907728 MB (0%) 1 volume:                                                                    V raid                  State: up       Plexes:       1 Size:      lighting world  3726 GB 1 plex:                                                                      P raid.p0            R5 State: up       Subdisks:     3 Size:       3726 GB 3 subdisks:                  lighting world               lighting world                                   S raid.p0.s0            State: up       D: hdd1         Size:       1863 GB S raid.p0.s1            State: up       D: hdd2         Size:  lighting world      1863 GB S raid.p0.s2            State: up       D: hdd3         Size:       1863 GB df and mount output: Code: Select all [root@dev]# df -h                        lighting world       lighting world     Filesystem          lighting world Size    Used   Avail Capacity  Mounted on /dev/ad0s1a         496M    355M    101M    78%    / devfs              lighting world  1.0K    1.0K      0B   100%    /dev /dev/ad0s1e         496M     16K    456M     0%    /tmp /dev/ad0s1f         433G    2.5G    396G