MSD-PA25.6-032MS 32GB is an SSD type hard drive which can fit 32 GB of data. The form factor is 2.5" which is standard for SSD drives.
From SmartTeck
CoreParts MSD-PA25.6-032MS internal solid state drive 2.5" 32 GB -
Compadvance
COREPARTS 2.5" Ide 32Gb
Athema Services
microstorage 2.5" ide 32gb mlc ssd 100/28 msd-pa25.6-032ms - eet01