About Disk group Scrub tool

Yes, a 6-week completion time can be completely normal for a disk group scrub on the ME5024. According to Dell's official documentation, the time it takes to complete a scrub depends on several factors, including the size of your disk group, the utility priority setting, and the amount of host I/O activity happening at the time. Background scrubs are designed to yield to host traffic, meaning they will slow down significantly when your system is busy handling other tasks. For reference, the Dell ME5 system has a default scrub duration of 720 hours (30 days) and allows a maximum goal setting of 1080 hours (45 days, or roughly 6.5 weeks), so a 6-week scrub duration falls within the expected range.

Yes, it is very likely that the scrubbing process is a contributing factor to your slow data loading. Even though background scrubs run at a low priority to minimize their impact, they still consume drive resources and controller CPU. The more important issue here is that because your scrub is set to start every 15 days (360 hours) but takes 6 weeks (approximately 1,008 hours) to finish, your system is essentially in a continuous state of scrubbing without any break between cycles. This means your storage hardware is constantly running this background task, leaving fewer resources available for your everyday data operations such as loading data.

To help improve your data loading speeds, consider increasing the background scrub interval to a longer period, such as 30 to 90 days, so your system gets a recovery window between scrub cycles. Another option is to disable the automated background scrub entirely and instead run manual scrubs during a planned low-traffic maintenance window. Dell notes that manual scrubs typically complete faster than background scrubs since they are not being continuously interrupted by host I/O.

For further details, you can refer to the following official Dell resources:

Dell PowerVault ME5 Series Manuals and Documents (includes the Administrator's Guide and CLI Reference Guide):
https://www.dell.com/support/home/en-us/product-support/product/powervault-me5024/docs

Dell PowerVault ME5 Best Practices Guide (includes insights on I/O impact during background tasks):
https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h19268-dell-powervault-me5-bp-wp.pdf