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Re: Advice on upgrading to SSD

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> 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.

-- 
Tony van der Hoff        | mailto:tony@vanderhoff.org
Buckinghamshire, England |

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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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