This is what I bought, and I am returning it Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) https://a.co/d/9MjJj7X
Mark On Fri, Jul 15, 2022, 12:37 PM Robert Citek <[email protected]> wrote: > Even for a spinning disk that seems really slow, especially if it is rated > for USB3.0. I haven’t played with spinning disks in years, but IIRC I was > getting 30-40 MB/s writes. > > This drive sounds similar to yours and is advertised at a max of 220 MB/s. > Even half that speed would be quite good. > > > https://www.bestbuy.com/site/seagate-backup-plus-fast-4tb-external-usb-3-0-portable-hard-drive-black/5127078.p?skuId=5127078 > > Regards, > - Robert > > On Fri, Jul 15, 2022 at 1:22 PM Mark Phillips <[email protected]> > wrote: > > > Found the problem....I got a rotational drive, not ssd. > > > > Mark > > > > On Fri, Jul 15, 2022, 12:15 PM Mark Phillips <[email protected] > > > > wrote: > > > > > Disks benchmarks 1/2 way done. > > > > > > Showing > > > Avg read 2.3 MB/sec > > > Avg write 1.8 MB/sec > > > Avg access time 450 msec > > > > > > Does this seem slow for a seagate 4tb USB 3 external drive? > > > > > > Mark > > > > > > On Fri, Jul 15, 2022, 11:53 AM Mark Phillips < > [email protected] > > > > > > wrote: > > > > > >> It may be a cockpit error. The USB drive is brand new, and I assumed > > >> formatted to vfat. It turns out it is ntfs. I reformatted the drive to > > >> ext4, and I am running benchmarks. > > >> > > >> Initial results from hdparm (on a different machine - SurfacePro 4 > > >> running Ubuntu > > >> Timing cache reads: 9598.53 MB/sec > > >> Buffered disk reads: 6.47 MB/sec > > >> > > >> Waiting for disks benchmark on the target machine. > > >> > > >> Mark > > >> > > >> On Fri, Jul 15, 2022, 10:21 AM Robert Citek <[email protected]> > > >> wrote: > > >> > > >>> Indeed, that sounds really slow: > > >>> > > >>> ( 138GB * 1000MB/GB ) / (26hr * 60min/hr * 60s/min ) = 1.5 MB/s ~ 12 > > >>> Mbps > > >>> > > >>> That's in the USB1.x range. If you use USB3.0 and can get 100MB/s > > write > > >>> speed, you'd be done in about 6 hours. > > >>> > > >>> Have a look at hdparm to get some info on read/write performance of > > your > > >>> drive: > > >>> > > >>> > > >>> > > > https://linuxconfig.org/hard-drive-speed-test-using-linux-command-line-and-hdparm > > >>> > > >>> Good luck and let us know what you discover. > > >>> > > >>> Regards, > > >>> - Robert > > >>> > > >>> > > >>> > > >>> On Fri, Jul 15, 2022 at 10:48 AM Michael Ewan < > [email protected] > > > > > >>> wrote: > > >>> > > >>> > Are you using a USB3 drive and a USB3 port, the speed of the > > interface > > >>> is > > >>> > what I would think of first. > > >>> > > > >>> > On Fri, Jul 15, 2022 at 8:41 AM Mark Phillips < > > >>> [email protected]> > > >>> > wrote: > > >>> > > > >>> > > I have an Ubuntu 18.04 system with two drives in an lvm with one > > >>> logical > > >>> > > root partition. I am trying to back up the contents of the drives > > >>> (ie /) > > >>> > to > > >>> > > an external usb drive using rsync. It is taking a really long > time. > > >>> After > > >>> > > 26 hours of continuous operation I have only transferred 138 GB > out > > >>> of 2+ > > >>> > > TB, so I am looking at about 16 days to complete the transfer. > > >>> > > > > >>> > > My rsync command is: > > >>> > > sudo rsync --no-compress --info=progress2 -avAXEWSlHh > > >>> > > > > >>> > > > > >>> > > > >>> > > > --exclude={'/run','/mnt','/swapfile','/boot','/dev','/proc','/sys','/run','/mnt','/media','/lost+found','/swapfile.extended','/tmp'} > > >>> > > / '/media/mark/Seagate Portable > > Drive/tsunami-backups-Jul_13_17-39/' > > >>> > > > > >>> > > Any suggestions on how I can speed this up and not lose any data? > > >>> > > > > >>> > > Thanks! > > >>> > > > > >>> > > Mark > > >>> > > > > >>> > > > >>> > > >> > > >
