Any idea why MR is taking soooo long to restore images?? Running new win 11 pro pc. 32GB memory,
completely
updated etc. Used to take 5 - 6 min+  now exceeds 14 mins. Image sizes have changed some, but only 1 - 2 GB
which could not account for xtra time. Am I possibly doing something wrong???

Thanks for any help.
EE

Maybe something changed such that Rapid Delta Restore is no longer possible? If you have restore logs available for review, see if the fast restores include the line “Looking for changes” while the “slow” restores do not.

+x

 

jphughan - 21 March 2023 3:00 AM

Maybe something changed such that Rapid Delta Restore is no longer possible? If you have restore logs available for review, see if the fast restores include the line “Looking for changes” while the “slow” restores do not.

+x

 

jphughan - 21 March 2023 3:00 AM

Maybe something changed such that Rapid Delta Restore is no longer possible? If you have restore logs available for review, see if the fast restores include the line “Looking for changes” while the “slow” restores do not.

I checked both logs, fast and slow, and they both have "looking for changes".

Make sure you see that line specifically on the main partition(s) you’re restoring as opposed to just something small like the hidden WinRE partition.

But even if Rapid Delta is always in use on the partition(s) of interest, the size of the image isn’t the only factor. The degree of difference between the current state and the backup you’re restoring matters. So for example if you always restore the same historical backup, then in general the more time that goes by, the greater the difference in states will be, and therefore the more work will need to be done in a Rapid Delta scenario. That can mean that restoring the same backup will take longer over time. But even if you’re not always restoring the same backup, the key is the degree of difference.

If you want to run some controlled tests, disable Rapid Delta.

If that doesn’t account for it, then unfortunately there isn’t really much information here that would help someone diagnose anything.

+x

 

jphughan - 21 March 2023 3:33 AM

Make sure you see that line specifically on the main partition(s) you’re restoring as opposed to just something small like the hidden WinRE partition.But even if Rapid Delta is always in use on the partition(s) of interest, the size of the image isn’t the only factor. The degree of difference between the current state and the backup you’re restoring matters. So for example if you always restore the same historical backup, then in general the more time that goes by, the greater the difference in states will be, and therefore the more work will need to be done in a Rapid Delta scenario. That can mean that restoring the same backup will take longer over time. But even if you’re not always restoring the same backup, the key is the degree of difference.If you want to run some controlled tests, disable Rapid Delta.If that doesn’t account for it, then unfortunately there isn’t really much information here that would help someone diagnose anything.

I checked if "looking xxxxx" was on "C" drive and it  is. If I disable rapid delta, what will that do, and will it cause any
problems???

Thanks
EE

Disabling Rapid Delta will write out erase the target partition and then write out the entire image file. So it will take longer, but it will give you a more consistent test case. If you don’t want to do that, then I can only reiterate that the size of the backup job is not the only influence on how long it takes to restore a backup when Rapid Delta is involved. And therefore seeing longer restore times doesn’t mean there’s a problem and doesn’t mean there’s anything you can do about it.

If you want a simple test that will be FAST, create a new backup and then immediately run a restore of that new backup, with Rapid Delta enabled. That restore should complete very quickly because the difference between current state and the backup state will be minimal. So here again, the correlation between backup size and restore time isn’t absolute. The question is how much data from that backup actually needs to be restored.

+x

 

jphughan - 21 March 2023 11:40 AM

Disabling Rapid Delta will write out erase the target partition and then write out the entire image file. So it will take longer, but it will give you a more consistent test case. If you don’t want to do that, then I can only reiterate that the size of the backup job is not the only influence on how long it takes to restore a backup when Rapid Delta is involved. And therefore seeing longer restore times doesn’t mean there’s a problem and doesn’t mean there’s anything you can do about it.

If you want a simple test that will be FAST, create a new backup and then immediately run a restore of that new backup, with Rapid Delta enabled. That restore should complete very quickly because the difference between current state and the backup state will be minimal. So here again, the correlation between backup size and restore time isn’t absolute. The question is how much data from that backup actually needs to be restored.

Question...
When restoring I have always erased the partition to which I restored in the belief that it would be better to have a
clean disk to receive the image. I just tried a restore leaving the receiving partition as is (no erasing of anything) and
ran restore. The restore time dropped to approx. 1 min 40 seconds instead of the prior 12 - 14 mins. Can you account for why this happened? Is MR checking for changes in all partitions and if none are found MR skips that partition and goes to the next one and repeats the process for rest of partitions being restored, thereby drastically reducing restore
time if no changes are found? If I continue restoring in this manner, may I be assured that all data is being restored
correctly and I will not encounter any problems with restored image??
Thanks for your time and help!!
EE

Your restoration is using the RDR (Rapid Delta Restore) mode... that will restore only the differences it finds when looking at the target partition.  If you erase the target partition, RDR cannot be used and the entire partition will be restored.