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These references are different, I believe, from how SPX determines the need for a differential because the size of my differentials does not follow the pattern depicted in those references.Īs a side note, I have PerfectDisk installed as a defragmentation tool. I have also included in the snapshot a reference to the differences between incrementals and differentials along with a diagram from EaseUS depicting the process. The only one I would have expected is the one the day after my Monthly Quality Win10 updates (which I manually check for on the second Tuesday of the month - late afternoon). As can be seen, the differentials are excessive. The snapshot shown below reflects the backup sizes and timings for the last 3 weeks. ![]() FBACKUP MIRROR TO DIO INCREMENTAL VER.4.8 WINDOWSJmt356 wrote:Has anyone else had an issue with scheduled SPX incremental backups being displaced by differential backups? If so, was the cause Windows Updates? Update: I have taken a closer look at my three weekly cycles of SPX backups and have determined that I am also experiencing excessive differentials.ġ) My system drive (C:) is a 500GB Samsung 860 EVO SSD drive which replaced a 5 year old 250GB 840 EVO SSD drive December 27, 2019.Ģ) The Power Options are those as recommended by Samsung.ģ) The Fast Start feature is not turned on.Ĥ) My data drive is a 2TB WD Black internal hard driveĥ) I power down the system before going to bed and there does not appear to be any problems with the power down process (no "dirty" shut downs). FBACKUP MIRROR TO DIO INCREMENTAL VER.4.8 FULLHow long does it take you to do a full image and how large are the resulting files? Lastly, what schedule are you following to create full and incrementals? I am puzzled why your differentials take about 2 hours. That is, the files are small, with no evidence of being created by the comparison to the last full backup. Based on my experience with SPX, differential created files resemble the latter. As compared to other backup systems that will create new backups of only the differences between current environment and the last incremental. It seems some backup systems that invoke differentials (when deemed needed) will compare the last created full backup to the current environment and create a file containing all new or changed files. I have been doing some research on “differentials”. I will also look into whether turning off Fast Startup prevents forced differential backups. Jmt356 wrote:I wish I could get differential backups in 6-7 minutes. ![]() Has anyone else had an issue with scheduled SPX incremental backups being displaced by differential backups? If so, was the cause Windows Updates? FBACKUP MIRROR TO DIO INCREMENTAL VER.4.8 UPDATEI think many people would get frustrated if every time an update was installed, the incremental backup, which should take a few minutes, is displaced by a differential backup, which takes hours to complete. FBACKUP MIRROR TO DIO INCREMENTAL VER.4.8 WINDOWS 10Virtually every Windows 10 system has updates constantly being downloaded and installed. I do not find ShadowProtect's explanation be credible. This leads to a large number of incremental backups to be displaced. I get a Windows Update downloaded and installed on my system every few days. In other words, if a Windows Update is installed, the scheduled incremental backup will be displaced and a differential backup will instead be forced. ShadowProtect support is saying that differential backups are forced following the installation of Windows Updates. However, SPX forces differential backups for nearly half of the scheduled backups. SPX is set to take incremental backups at scheduled increments. I am using ShadowProtect SPX to create incremental backups of my laptop. ![]()
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