> the partition size limit of 127 GB we still have for our file system.

What about IceFS?

>>> real IDE SSDs are limited around 120GB

>> As you should know, 2.5" PATA SSDs are available with up to 480 GB.
>> Edit: I've even found a 512 GB one:

> possible they created bigger ones later

The KSD-PA25.1-256MJ has been available since 2010.

> some of the thingies are already not available from what i saw clicking on the links.

Of the 5 SSDs (1x 240 GB, 2x 256 GB, 1x 480 GB, 1x 512 GB) I linked to, 3 are available directly or indirectly from my links. The remaining 2 are available from Amazon:

http://www.amazon.com/dp/B00L53B7BM
http://www.amazon.de/dp/B00G1REB74