constant high disk usage from "System"

[BahnStormer]

I am seeing constant 300-400Mb/sec disk IO - over an hour after reboot and it is still going.

 

I thought it was some sort of Dropbox/OneDrive integrity check, but there's no NIC activity and it's still going.

 

System spec in signature. Win10 Pro 64bit, all latest drivers and patches.

[BahnStormer]

Just now, BahnStormer said:

I am seeing constant 300-400Mb/sec disk IO - over an hour after reboot and it is still going.

 

I thought it was some sort of Dropbox/OneDrive integrity check, but there's no NIC activity and it's still going.

 

System spec in signature. Win10 Pro 64bit, all latest drivers and patches.

okay - that was one of those problems where I've been mulling it over for the last 2hrs.... but just the act of typing it out made be go through the list of things it could be.

 

My 2x 8Tb spindle drives (RAID1) are re-synchronising... 100%, that's the cause. Explains why it's only 400Mb/sec too!