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Re: Advice on upgrading to SSD

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On Wed, 4 Mar 2020, Tony van der Hoff wrote:

>> On Monday 02 March 2020 06:28:58 Tony van der Hoff wrote:
>> 
>>> Hi,
>>> I'm currently running Buster on a 5 year old GigaByte motherboard with
>>> a 10-year old Raid-1 array on 2 500GB disks. Although it is running
>>> fine, I'm becoming a bit concerned about the longevity of this
>>> storage, so I'm planning to upgrade it to a 500GB or maybe 1TB SSD
>>> from Crucial.
>>> 
>>> My plan would be to install the SSD in the cage, and dd the contents
>>> of the array onto the SSD. I would then change the BIOS to boot from
>>> the SSD, making the RAID array redundant.
>>> 
>>> Can someone please tell me whether this plan is feasible, and what
>>> pitfalls I might encounter?
>>> 
>
> Thanks to all who replied.
>
> Gene didn't address my problem, but made the very useful observation that 
> disks spinning 24/7 don't really die. Perhaps I shouldn't worry about 
> replacing them.
>
> Dan gave a useful step-by-step procedure for copying at file level. This 
> method is slightly problematical for me as it includes "make changes to new 
> /etc/fstab" and "make changes to bootloader to set new root filesystem", 
> neither of which I feel feel comfortable with, due to lack of knowledge. I'll 
> certainly abandon my plan to dd the whole filesystem.
>
> Basti and Deloptes propose to add the SSD as a third drive to the RAID. Very 
> attractive, but would involve complications if the SSD is not identical in 
> size to the old spinners.
>
> Andrei supports file-level copying, so I'll stick to that.
>
> Joe supports the idea of adding the drive to the RAID, but makes no reference 
> to dealing wth the size difference.
>
> Alex highlights the downside of size difference.
>
> David and Sarunas suggests doing a system reinstall on the SSD, leaving my 
> data on the RAID. Whilst a useful upgrade, I don't really understand how that 
> addresses my problem. (if I have one!)
>
> Michael and Deloptes poo-poo that suggestion, with which I concur.
>
> Andy suggests that I should continue using RAID, instead of reverting to a 
> single disk. Thank you very much for this helpful suggestion, I considered it 
> originally, but abandoned it on cost grounds. When I originally built this 
> system with RAID, 10 years ago, I was very reliant on data integrity. I now 
> no longer have such a pressing need, and am quite happy to rely on a single 
> disk, with nightly rsync backups to an off-site server. I certainly have no 
> need for the always-on data that RAID provides.
>
> Finally, Geoff supports Andy's suggestion, and in addition, interestingly, 
> mentions NVME to replace SATA SSD. Attractive, but costly.
>
> So, you have all given me plenty to think about, for which I'm grateful.
> I guess I'll go with s single SSD onto which I'll copy the data from the 
> RAID.
> Thank you all for helping me make up my mind.
>

if new drive is the same size or larger
install new drive
boot using usb drive, i use systemrescuecd
dd if=old_drive of=new_drive

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Advice on upgrading to SSD Tony van der Hoff <lists@vanderhoff.org> - 2020-03-02 12:30 +0100
  Re: Advice on upgrading to SSD Gene Heskett <gheskett@shentel.net> - 2020-03-02 14:00 +0100
    Re: Advice on upgrading to SSD Tony van der Hoff <lists@vanderhoff.org> - 2020-03-04 15:50 +0100
      Re: Advice on upgrading to SSD grumpy@mailfence.com - 2020-03-04 16:10 +0100
      Re: Advice on upgrading to SSD Michael Stone <mstone@debian.org> - 2020-03-04 17:10 +0100
        Re: Advice on upgrading to SSD Nate Bargmann <n0nb@n0nb.us> - 2020-03-04 19:00 +0100
      Re: Advice on upgrading to SSD rhkramer@gmail.com - 2020-03-04 18:50 +0100
        Re: Advice on upgrading to SSD Dan Ritter <dsr@randomstring.org> - 2020-03-04 19:00 +0100
          Re: Advice on upgrading to SSD Cindy Sue Causey <butterflybytes@gmail.com> - 2020-03-04 20:30 +0100
          Re: Advice on upgrading to SSD "007@caiway.net" <007@caiway.net> - 2020-03-05 06:50 +0100
            Re: Advice on upgrading to SSD Klaus Singvogel <deb-user-ml@singvogel.net> - 2020-03-05 08:30 +0100
              Re: Advice on upgrading to SSD David Wright <deblis@lionunicorn.co.uk> - 2020-03-05 18:20 +0100
                Re: Advice on upgrading to SSD Tixy <tixy@yxit.co.uk> - 2020-03-05 18:30 +0100
                Re: Advice on upgrading to SSD Klaus Singvogel <klaus@singvogel.net> - 2020-03-05 19:00 +0100
        Re: Advice on upgrading to SSD Michael Stone <mstone@debian.org> - 2020-03-05 00:50 +0100
          Re: Advice on upgrading to SSD Gene Heskett <gheskett@shentel.net> - 2020-03-05 01:00 +0100
            Re: Advice on upgrading to SSD Michael Stone <mstone@debian.org> - 2020-03-05 04:30 +0100
              Re: Advice on upgrading to SSD Gene Heskett <gheskett@shentel.net> - 2020-03-05 04:40 +0100
            Re: Advice on upgrading to SSD <tomas@tuxteam.de> - 2020-03-05 09:30 +0100
              Re: Advice on upgrading to SSD rhkramer@gmail.com - 2020-03-05 16:20 +0100
                Re: Advice on upgrading to SSD Michael Stone <mstone@debian.org> - 2020-03-05 20:00 +0100
                Re: Advice on upgrading to SSD rhkramer@gmail.com - 2020-03-06 00:00 +0100
        Re: Advice on upgrading to SSD Gene Heskett <gheskett@shentel.net> - 2020-03-05 00:50 +0100
      Re: Advice on upgrading to SSD David Christensen <dpchrist@holgerdanske.com> - 2020-03-05 03:40 +0100
  Re: Advice on upgrading to SSD Dan Ritter <dsr@randomstring.org> - 2020-03-02 16:40 +0100
    Re: Advice on upgrading to SSD basti <basti@unix-solution.de> - 2020-03-02 17:30 +0100
      Re: Advice on upgrading to SSD deloptes <deloptes@gmail.com> - 2020-03-02 20:00 +0100
    Re: Advice on upgrading to SSD Andrei POPESCU <andreimpopescu@gmail.com> - 2020-03-03 09:30 +0100
  Re: Advice on upgrading to SSD Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2020-03-02 19:20 +0100
    Re: Advice on upgrading to SSD Alex Mestiashvili <amestia@rsh2.donotuse.de> - 2020-03-02 20:40 +0100
  Re: Advice on upgrading to SSD David Christensen <dpchrist@holgerdanske.com> - 2020-03-02 20:20 +0100
    Re: Advice on upgrading to SSD Sarunas Burdulis <sarunas@math.dartmouth.edu> - 2020-03-02 20:30 +0100
      Re: Advice on upgrading to SSD Michael Stone <mstone@debian.org> - 2020-03-02 20:30 +0100
        Re: Advice on upgrading to SSD deloptes <deloptes@gmail.com> - 2020-03-02 22:10 +0100
  Re: Advice on upgrading to SSD Andy Smith <andy@strugglers.net> - 2020-03-03 01:50 +0100
    Re: Advice on upgrading to SSD Geoff <unit735@bigpond.com> - 2020-03-03 10:20 +0100

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