Creating Image from multiple file SQL Backups

JacoNZJacoNZ Posts: 7 New member
in SQL Clone
Hi, we are currently evaluating SQLClone. Can you tell me approximately how long it will take to create an image from a 700Gb SQL Backup? We started the process of creating a image, it has been taking 10 hours and it is still only "checking for compatibility"
Our other database is 6Tb in size backed up to 2Tb backup, how long should this take?
We backup using SQLBackup 7, backups are divided in 7 backup files
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  • TheSQLGuruTheSQLGuru Posts: 78 Silver 2
    Not sure if it comes into play, but could file zeroing be a thing here? Would Instant File Initialization be helpful if so?

    Other than that, I would say it is VERY dependent on your IO read, network, IO write capabilities and latencies - which can each be a HUGE impediment to throughput.
    Kevin G. Boles
    SQL Server MVP 2007-2012
    Indicium Resources, Inc.
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  • JacoNZJacoNZ Posts: 7 New member
    Hi, We have good IO performance on this server, we run ETL processes with large data throughput without problem. The backups I use is local on the server, so not a network problem. I have now also tried creating a image from a 100GB local database, but it also shows "checking for compatibility.." for the last 2 hours.
    Is there anyone that use SQLClone for larger databases 100GB plus?
    Maybe there is an issue with the evaluation version?

    Jaco
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  • GrantGrant Posts: 89 Silver 5
    I've been running it on a 200gb backup and it takes around 40 minutes (on very weak hardware) to create an image. However, it's a single file backup. I haven't tested it on a multi-file backup yet.
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  • JacoNZJacoNZ Posts: 7 New member
    Hi Grant. Restoring the database takes 3 hours on this server. When trying to create a image from the same backup it does not get past the "checking for compatibility.."
    I also tried creating a image directly from a 100Gb database, this also does not get past the "checking for compatibility.." There are no errors.
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  • JacoNZJacoNZ Posts: 7 New member
    It does work when I create an image from a database with no data.
    We are using SQL Server 2016 and the backups are made using Redgate SQL Backup 7
    OS: Windows Server 2012 R2
    Processor: Intel Xeon CPU E5-2650 0 @ 2.00GhZ (2 processors)
    RAM: 224Gb
    Storage: SAN
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  • GrantGrant Posts: 89 Silver 5
    That's odd behavior. I'll see if someone from the team can look into it.
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