March 28, 201214 yr Hi, i just installed my new unRAID build (5b14) and want to copy all of my old data from external drives (eSata and USB 2.0 / USB 3.0 - mostly NTFS). Right now I just configured both drives to be part of the array without having a parity or cache drive. When I now copy my data from those external drives, the maximum writing speed is only about 15 MB/s. I also tried to copy the the data from my Zotac AD02 over Gigabit LAN and I got the same max. speed. Is there any way to improve the transferspeed? 15 MB/s just seems a bit slow to me. Here is my build: - HP MicroServer N36L (preinstalled bios) - 2x Seagate Barracuda SATA III 3TB (ST3000DM001) - TRENDnet N900 TEW-680MB as Gigabit switch Regards
March 28, 201214 yr Post a syslog. Do you notice any difference in speed between USB 2.0 and USB 3.0 or eSATA?
March 29, 201214 yr Author I did some performance testing on that two drives: Disk 1: /dev/sdb: Timing cached reads: 2022 MB in 2.00 seconds = 1010.46 MB/sec Timing buffered disk reads: 512 MB in 3.01 seconds = 170.30 MB/sec root@Tower:/var/log# dd if=/dev/zero of=/mnt/disk1/test.dd count=8192000 8192000+0 records in 8192000+0 records out 4194304000 bytes (4.2 GB) copied, 159.224 s, 26.3 MB/s Hi, no I do not see any difference between copying from direct attached external drive (USB 2.0) or by network over smb (USB 3.0 and eSATA). The eSATA drive I cannot attach to the unRAID server because it has an ext4 format. Disk 2: /dev/sdc: Timing cached reads: 2010 MB in 2.00 seconds = 1004.75 MB/sec Timing buffered disk reads: 512 MB in 3.02 seconds = 169.61 MB/sec root@Tower:/var/log# dd if=/dev/zero of=/mnt/disk2/test.dd count=8192000 8192000+0 records in 8192000+0 records out 4194304000 bytes (4.2 GB) copied, 158.281 s, 26.5 MB/s The write speeds really seem slow to me for a sata drive. Any suggestions? Bios settings or something? Even when I copy from /mnt/disk1 to /mnt/disk2 it has only a transferrate up to 26 MB/s This review is telling me that it should be by far faster: http://www.maximumpc.com/article/reviews/3tb_seagate_barracuda_review Regards syslog_20120329.zip dmesg.txt
March 29, 201214 yr The Screen shots in the forum link are for unRAID V5.0 Beta. Your screens shows are for V4.7.
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