Lenovo 7N47A00129 32GB is an SSD type hard drive which can fit 32 GB of data. This model has a 2.5" and M0.2 form factor, which is common for SSD drives.
From Senetic
ThinkSystem M.2 32GB SATA 6Gbps Non-Hot Swap SSD
Clove Technology
Lenovo 7N47A00129 internal solid state drive M.2 32 GB Serial ATA III MLC