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How long would you say is a fair amount of time to restore from a backup?

I am curious since many people don't mind if backups are slow. But what about restores? Say you have 1 TB of data to restore from a remote backup. How long would you be happy to wait to restore that amount of data in case of a disaster?

Comments

  • allthemtingsallthemtings Member, Megathread Squad

    For 1TB it usually takes me about hour or so but theres many different factors that go into this and can differ

  • @allthemtings said:
    For 1TB it usually takes me about hour or so but theres many different factors that go into this and can differ

    One hour from remote backup? Where are you based and where are your backups based? What kind of connection do you have between the two locations? 1 TB in one hour is amazing.

    Thanked by 1nonoceb
  • allthemtingsallthemtings Member, Megathread Squad

    @vitobotta said:

    @allthemtings said:
    For 1TB it usually takes me about hour or so but theres many different factors that go into this and can differ

    One hour from remote backup? Where are you based and where are your backups based? What kind of connection do you have between the two locations? 1 TB in one hour is amazing.

    From server to server NL > Germany, minio s3 > prod server both push 10g with nvmes

    Thanked by 2OhJohn nonoceb
  • @allthemtings said:

    @vitobotta said:

    @allthemtings said:
    For 1TB it usually takes me about hour or so but theres many different factors that go into this and can differ

    One hour from remote backup? Where are you based and where are your backups based? What kind of connection do you have between the two locations? 1 TB in one hour is amazing.

    From server to server NL > Germany, minio s3 > prod server both push 10g with nvmes

    That's awesome :)

    Thanked by 1allthemtings
  • Also to consider file amount; I tested a restore last night, from BorgBase EU, 70GiB but ~453.000 files, was 21 minutes (target was NVMe storage).

  • davidedavide Member
    edited November 2025

    The last time I recovered from backup I was still on ADSL, it took me 2 days to download and restore 60 GB of MariaDB. Today the same data size would take me 1 day to download thru the home connection. There is no way I could restore 1 TB of data from remote backup.

  • @iriska said:
    Also to consider file amount; I tested a restore last night, from BorgBase EU, 70GiB but ~453.000 files, was 21 minutes (target was NVMe storage).

    Restore over the Internet?

    @davide said:
    The last time I recovered from backup I was still on ADSL, it took me 2 days to download and restore 60 GB of MariaDB. Today the same data size would take me 1 day to download thru the home connection. There is no way I could restore 1 TB of data from remote backup.

    1 day to restore 60 GB? ouch. What connection do you have?

  • Depends on the data / VMs, I use Proxmox Backup Server, PBS
    All in all it should be done in around 2-3 hours, I have lot less than 500 GB in total of backed up data.
    OTOH, for critical stuff I have 2 instances running, so that's something helpful too.
    I recently backed up ~250 GB in one go (cloned/moved backup server), took an hour or 2, the reverse way should be pretty much the same if not even faster (my backup server is connected to 10G, while the others are mainly 1G / 2G)

  • @vitobotta said:

    @iriska said:
    Also to consider file amount; I tested a restore last night, from BorgBase EU, 70GiB but ~453.000 files, was 21 minutes (target was NVMe storage).

    Restore over the Internet?

    @davide said:
    The last time I recovered from backup I was still on ADSL, it took me 2 days to download and restore 60 GB of MariaDB. Today the same data size would take me 1 day to download thru the home connection. There is no way I could restore 1 TB of data from remote backup.

    1 day to restore 60 GB? ouch. What connection do you have?

    LTE modem, the ISP is Poste Italiane SPA; the cell tower is 4 Km from the modem, but I'm in the countryside and the tower is almost on a line of sight.

  • @davide said:

    @vitobotta said:

    @iriska said:
    Also to consider file amount; I tested a restore last night, from BorgBase EU, 70GiB but ~453.000 files, was 21 minutes (target was NVMe storage).

    Restore over the Internet?

    @davide said:
    The last time I recovered from backup I was still on ADSL, it took me 2 days to download and restore 60 GB of MariaDB. Today the same data size would take me 1 day to download thru the home connection. There is no way I could restore 1 TB of data from remote backup.

    1 day to restore 60 GB? ouch. What connection do you have?

    LTE modem, the ISP is Poste Italiane SPA; the cell tower is 4 Km from the modem, but I'm in the countryside and the tower is almost on a line of sight.

    Ouch, that must hurt :p I didn't know Poste Italiane offered Internet services until my parents switched to them recently

  • mine from asia to eu storage was about 20 minutes for 50gb, but if you use borgbackup, the second time will be 6 mins

  • @mhpteam said:
    mine from asia to eu storage was about 20 minutes for 50gb, but if you use borgbackup, the second time will be 6 mins

    I like Borg, but switched back to Restic as it's consistently faster with both backups and restores for me

  • Last time I did restore, took me around a day for 3TB of data done with rsync. Location is from EU to CA.

  • @vitobotta said: Restore over the Internet?

    Yes, from borgbase eu to vps in germany ( ~5ms ).

  • davidedavide Member
    edited November 2025

    @vitobotta said:

    @davide said:

    @vitobotta said:

    @iriska said:
    Also to consider file amount; I tested a restore last night, from BorgBase EU, 70GiB but ~453.000 files, was 21 minutes (target was NVMe storage).

    Restore over the Internet?

    @davide said:
    The last time I recovered from backup I was still on ADSL, it took me 2 days to download and restore 60 GB of MariaDB. Today the same data size would take me 1 day to download thru the home connection. There is no way I could restore 1 TB of data from remote backup.

    1 day to restore 60 GB? ouch. What connection do you have?

    LTE modem, the ISP is Poste Italiane SPA; the cell tower is 4 Km from the modem, but I'm in the countryside and the tower is almost on a line of sight.

    Ouch, that must hurt :p I didn't know Poste Italiane offered Internet services until my parents switched to them recently

    Sitting at my computer feels like having a pinkie on a light iron trigger that pops the guns out there in the cloud. No it doesn't hurt because I manage to make it work but I measure how pathetic this is.

  • If you have really important data , 1tb should be restored in one day will be fine. Most people only just backup personal daliy videos or something ,that don't need hurry.

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