Server XSeries 220
Yes, that is the total amount of hard drive space.
This server was built for speed not for storage.
The xSeries 220 server supports four SCSI hard disk drives. The server does not support IDE hard disk drives. Some models support hot-swap hard disk drives and other models support only non-hot-swap hard disk
Your server supports four 1-inch (26 mm) slim, 3.5-inch SCSI hard disk drives in the hard disk drive bays. You can install four non-hot-swap hard
disk drives in the models that have the standard non-hot-swap drive cage. You can install three hot-swap hard disk drives and one on-hot-swap hard disk drive in the models that come with the hot-swap drive cage. Both the non-hot-swap and hot-swap drive cages hold a maximum of three hard disk drives.
The calculation at that time was 4 drives with 36.7GB storage.
Even if you find the drives somewhere, they will be very pricy.
If you have any more questions, just come back here and leave a comment - I'm happy to help.