raid1 with several old drives and a big new one

Eric Wong
2020-07-31T00:16:53Z

Say I have three ancient 2TB HDDs and one new 6TB HDD, is there
a way I can ensure one raid1 copy of the data stays on the new
6TB HDD?

I expect the 2TB HDDs to fail sooner than the 6TB HDD given
their age (>5 years).

The devid balance filter only affects data which already exists
on the device, so that isn't suitable for this, right?

Thanks in advance.