Cool, 238GB out of 256GB could be seen instead of 223GB. That would be assurance of some sort.
BTW, I also found the power requirements of Retina Macbook Pro SSDs to be 3.3V - 2.39A here
Roughly 600 bucks / 3,800 RMB for 768GB SSDs
http://item.taobao.com/item.htm?id=16593866239
22-pin SATA adapter could fit inside an iPod after removing the case

http://item.taobao.com/item.htm?id=16185685160
Another one without a case is 97mm by 48mm

http://item.taobao.com/item.htm?id=20383276693
The iPod Video should be 103.5mm by 61.8mm
http://www.applematters.com/collections/ipod-5th-generation/
Yet another 40-pin ZIF adapter for 22-pin SATA interface


http://eshop.sintech.cn/18-sata-ssd-to-zif-adapter-as-toshiba-hitachi-hdd-p-660.html
Could all that be installed inside an iPod while the battery is able to provide enough juice for that 3.3V - 2.39A SSD by any chance?
Chinese manufacturers might actually make adapters straight from Retina MBP SSD interface to 40-pin ZIF if there were enough interests.

























