I've got few SATA disks from FAS2020 system where I have this number more then zero.
Glist count: 40
Scrub last done: 03:12:42
Scrub count: 128
Glist count: 15
Scrub last done: 03:12:42
Scrub count: 343
Glist count: 7
Scrub last done: 03:12:42
Scrub count: 257
output from storage show disk -a command
I suspect the drives are going bad way.
PS. Power on hours 43750.