We could do weekly. The volume of data is large enough that even sequential scrubbing when idle is about an 18 hour operation. As it is, we're happy with monthly scrubbing on the Z3 arrays. We don't bother pulling drives until they run out of reallocatable sectors, this extends the service lifetime by a year in most cases.
I intentionally provisioned one of the long term archive only appliances with 12 hot spares. This was to prevent the need for a site visit again before we lifecycle the appliance. Currently down to seven hot spares.
That replacement will probably happen later this year. Should reduce the colo cost by power requirement reduction enough that the replacement 200TB appliance pays for itself in 18 months.
I intentionally provisioned one of the long term archive only appliances with 12 hot spares. This was to prevent the need for a site visit again before we lifecycle the appliance. Currently down to seven hot spares.
That replacement will probably happen later this year. Should reduce the colo cost by power requirement reduction enough that the replacement 200TB appliance pays for itself in 18 months.