Re: Need help speeding up a backup

Top Page
Message as email
+ (text/plain)
+ (text/html)
+ (text/plain)
Delete this message
Reply to this message
Author: Mark Phillips via PLUG-discuss
To: Main PLUG discussion list
CC: Mark Phillips
Subject: Re: Need help speeding up a backup
Thanks to everyone for their suggestions.

It turns out I bought a HDD and not a SSD for the backup. Once I replaced
the HDD with a SSD, the backup only took a couple of hours.


On Sat, Jul 16, 2022 at 7:16 AM Eric Oyen via PLUG-discuss <
> wrote:

> Mark,
> This sounds a lot like you are on a USB 2.0 enabled port. It’s that or
> there is something a bit off about your external drive that you are backing
> up to. I have had recent experience with so-called cheap external backup
> devices, including a 1 TB external SSD and several external 1 and 2 TB
> external Hdd’s. In the case of the external SSD, it turned out to be a fake
> unit with the controller reprogrammed to emulate a 1 tB drive. It was so
> slow that formatting it took 9 days and it failed on verification. I ended
> up having to use several open source windows tools (yeah, windows, UGH! But
> that was what was available) and determined that the SSD was fake. I let
> the provider know that he might be in for trouble once I explained the
> situation.
> Btw, what is the brand of that external backup device and model? There are
> some tools that can be used to test the speed of the link/controller and
> also the read and write speed of the drive itself. Do you have access to a
> different external in the 2 TB size that you know actually works well? If
> all else fails, you can always go to Walmart and spend a few bucks on an
> external that is larger than you need (I think they have 2, 4 and 12 TB
> models available). I have several of the 1 TB models here and they are all
> blazing fast on a USB C (3.1) port. Takes less than an hour to properly
> format and I’ve used one for backup on my OS X machine so far.
> Anyway, let us know how it turns out.
> -Eric
> From the Central Offices of the Technomage Guild, Research and Development
> Dept.
> On Jul 15, 2022, at 8:40 AM, Mark Phillips via PLUG-discuss <
> > 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
> ---------------------------------------------------
> PLUG-discuss mailing list -
> To subscribe, unsubscribe, or to change your mail settings:
> ---------------------------------------------------
> PLUG-discuss mailing list -
> To subscribe, unsubscribe, or to change your mail settings:

PLUG-discuss mailing list -
To subscribe, unsubscribe, or to change your mail settings: