On 3/2/20 6:52 PM, Joe Pfeiffer wrote: > Tony van der Hoff <li...@vanderhoff.org> writes: > >> 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? > > I've found the best way to migrate to new disks, especially if I've > already got a RAID array, is to put the new disk in, add it to the > array, wait for the array to synchronize, remove the old disks from > array. Now install grub on the new disk. If the new disk is larger > than the old ones were, now resize the filesystem to match. > > This has worked well enough for me that I've got several one-disk RAID 1 > arrays in anticipation of eventual upgrades. >
Good idea, but most likely the 500GB SSD is not really 500GB as most vendors leave some space for over provisioning area.