How to select mSATA size?

I thought I would add an mSATA drive. How does one select the size? Just a bit larger than the size of “average” downloads?

Ken K

mSATA is only used for read cache and small frequently accessed files.
drobo does not recommend any large mSATA drives and 64GB might be the max…

Personally I used 64GB mSATA drive and did not have any noticeable effect.
My drobo mostly contains FLAC, CR2 and MKV files that I wouldn’t classify as small…

I have now removed my mSATA card from drobo to use it elsewhere.

Got it. Thanks