Howdy, I bought a 8TB hard drive. Seagate 8TB 5E8 Exos ST8000AS0003 is the exact model info. It seems to be slow. First, I had it hooked to a adapter to a USB port. I expected it to be a little slow but it gave me memories of the old dial-up days. When it shows KBs/second, it's getting slow for a sata drive. So, I moved it inside the case with a sata connection directly to the mobo. I unhooked my DVD burner for this. It's somewhat faster but still slow in my opinion. I found this for specs on a website.
Max. Sustained Transfer Rate OD (MB/s) 190MB/s OK, can I get half that now? One quarter would be better even. This is a sample of what I get when using --progress with rsync while copying files from another drive to it, backup thing. 102,782,342 100% 4.68MB/s 0:00:20 (xfr#122, ir-chk=1135/1995) 65,330,688 100% 5.34MB/s 0:00:11 (xfr#123, ir-chk=1134/1995) 59,338,843 100% 2.04MB/s 0:00:27 (xfr#124, ir-chk=1133/1995) 64,996,691 100% 10.99MB/s 0:00:05 (xfr#125, ir-chk=1132/1995) 467,837,625 100% 5.42MB/s 0:01:22 (xfr#126, ir-chk=1131/1995) 39,236,581 100% 5.42MB/s 0:00:06 (xfr#127, ir-chk=1130/1995) 302,340,815 100% 3.95MB/s 0:01:12 (xfr#128, ir-chk=1129/1995) This is what I get from hdparm: root@fireball / # hdparm -Tt /dev/sdb /dev/sdb: Timing cached reads: 8222 MB in 2.00 seconds = 4114.05 MB/sec Timing buffered disk reads: 2 MB in 3.59 seconds = 570.26 kB/sec root@fireball / # First one looks reasonable but second one just plain sucks. Note the KB instead of a MB. I get this on a much older drive: root@fireball / # hdparm -Tt /dev/sda /dev/sda: Timing cached reads: 8664 MB in 2.00 seconds = 4335.98 MB/sec Timing buffered disk reads: 328 MB in 3.01 seconds = 108.82 MB/sec root@fireball / # And smartctrl gives me this on the new drive: SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Extended offline Self-test routine in progress 90% 544 - # 2 Short offline Completed without error 00% 543 - # 3 Short offline Completed without error 00% 528 - I've ran those tests in the past and it not affect the copy speed. Still, it shows the drive is OK. I'm running the long one to be 100% sure. I was getting the same before I started the selftest tho. I created one large partition with gfdisk. It is formatted with ext4 file system. Most files are videos but some are other file types and smaller. Thing is, it seems slow no matter what size the file is. Large files just take longer naturally. This is what mount shows including options. /dev/sdb1 on /mnt/tmpdisk type ext4 (rw,relatime) I have a few other drives on this system. They work fine and perform fine. Heck, a 6TB drive in a external enclosure connected by USB does better than this. Can someone explain why this drive is so terribly slow? Did I do something wrong? Is there something special about a drive this large that I need to do? Thanks. Dale :-) :-)
