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6/22/2025, 11:08:38 PM
>>105671947
thanks for the video, very informative.
I've always assumed tape setup to be expensive, but now that i'm looking at buying 8x 24TB drives for my main pool expansion, it does look very affordable.
My main issue with tape is lack of flexibility, with offline HDD backup ZFS pool i can attach all the drives simultaneously and easily verify the data, look at any file, run a scrub, run SMART tests, send incremental snapshots, prune older snapshots etc.
With tape, i have no such flexibility. Even if you can backup the ZFS incrementally with snapshots across tape, verifying the data must be a pain in the ass, i assume you can't verify a tape that only contains an incremental snapshot, and you have to restore the entire pool from every tape first.
Also this "sliding window" backup strategy where i push new snapshots and prune old ones would require additional maintenance and metadata outside of the tape itself, i'd have to remember which tape contains which snapshots at which offset etc. It all seems too scary, if i fuck up once and miss some snapshot, i won't be able to restore anything after it.
thanks for the video, very informative.
I've always assumed tape setup to be expensive, but now that i'm looking at buying 8x 24TB drives for my main pool expansion, it does look very affordable.
My main issue with tape is lack of flexibility, with offline HDD backup ZFS pool i can attach all the drives simultaneously and easily verify the data, look at any file, run a scrub, run SMART tests, send incremental snapshots, prune older snapshots etc.
With tape, i have no such flexibility. Even if you can backup the ZFS incrementally with snapshots across tape, verifying the data must be a pain in the ass, i assume you can't verify a tape that only contains an incremental snapshot, and you have to restore the entire pool from every tape first.
Also this "sliding window" backup strategy where i push new snapshots and prune old ones would require additional maintenance and metadata outside of the tape itself, i'd have to remember which tape contains which snapshots at which offset etc. It all seems too scary, if i fuck up once and miss some snapshot, i won't be able to restore anything after it.
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