We want to use mSATA disks, but the connectors intended for it (e.g. Molex 48338-0090: 9.25mm deep, minimum height 6.2 mm) are pretty big. So the mSATA disk is 3mm high, but when using the connector twice as much would be needed, similar for the depth.
One option would be of course to solder flexprints to both, the disk and the carrier PCB, but this is logistically inconvenient, considering the price dynamism of the disks.
I found some very low profile connectors that might be used to contact the lower side of the mSATA connector, but I would need something for the top side, too.
In a way, the mSATA connector is an ordinary 0.8mm pitch card edge connector. I cannot imagine that in the era of mobile phones, compact cameras, etc. there is no way to contact a mSATA disk with space that corresponds to the mSATA dimensions.