The bottom line is that not only does Macrium absolutely do this – but I take advantage of this every night myself. I would have you look at Macrium’s options for disk management settings. I do also have it outlined in the Windows 7: Backing Up book, complete with pictures and detailed steps. That is the feature that controls when Macrium will automatically delete the oldest backup.ĭisk space management includes settings for how many backups you want to keep and whether or not the check should be performed before or after the current backup. In the resulting dialog look for “Disk space management.” At the bottom of that screen is an “advanced options” link. The trick, of course, is finding this setting it’s not terribly obvious where it is.Īfter you’ve created the backup definition telling Macrium what to back up and where to put it, a summary screen is displayed. That means it’s time to delete February.” Once that succeeds, it then says, “Okay, we’re only supposed to keep two we’ll keep and March and April. Then on the first of April, it does a new full backup. Time moves forward and it goes through March and successfully does all of its incremental backups. I’m left with two: February and March.īut it doesn’t stop there. Because that’s one more set (3) than I instructed it to keep (2) Macrium then deletes all of January’s backups. I now have two full backup sets – January and February – and the beginning of a third – March. On March 1 it begins a new backup set by creating a full backup.On February 1 the process restarts with a full backup, and then 27 or 28 daily incrementals to complete the February backup set.The backup software creates a January backup set – a full backup on January 1, and then 30 daily incremental backups throughout the rest of the month.Let’s look at how this works from the beginning of the year: I have Macrium Reflect set to keep at most, two backup sets – but I have room for three. Unfortunately it also means that if something goes wrong with the current backup, then not only do you not have the most recent backup but the oldest backup has also been deleted it was deleted before we began to make room for the backup that failed.Īfter: the backup software performs the current operation, and if it’s successful it then checks to see if there are now more backup sets than have been configured to keep. This frees up the disk space sooner, making it available for the new backup set. There’s an interesting question that needs to be asked first: do you have it delete the oldest set before or after it’s completed a successful backup?īefore: the backup software checks to see if the new backup would create more backup sets than you’ve configured it to keep, and if so it deletes the oldest before it begins operation. It will then delete the oldest backup set when it comes time to create a third one. Which you choose will depend on the disk space you want to allot to this purpose.įor example, you may set the software to keep only two backup sets. You can tell Macrium to keep a maximum number of backup sets. At the end of the month, it creates a new full backup.Įach of those full backups with all of its associated incremental backups is what I would refer to as a “backup set.” Managing your disk space.Every day it creates an incremental backup based on that full backup and any intervening incremental backups.
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