I currently have a WD2500JS in a mirror RAID and I wish to replace the secondary HDD. I know that I cannot have two completely different HDD's in mirror RAID; but are these two compatible?

Currently:
WD2500JS (8MB Cache; 7200 RPM)

Adding:
WD2500KS (16MB Cache; 7200 RPM)

Difference refers to capacity.

Since these are at the same RPM; and the secondary is at least the same cache as the first (or greater in this case).. Will these correctly support the mirror RAID?

Difference refers to capacity.

Since these are at the same RPM; and the secondary is at least the same cache as the first (or greater in this case).. Will these correctly support the mirror RAID?

(sorry; forgot to quote)