Dell PowerEdge T620 Owner's Manual page 130

Memory
Maximum RAM
LRDIMMs
RDIMMs
UDIMMs
Drives
Hard drives
Four–hard-drive systems
Eight–hard-drive systems
Twelve–hard-drive systems
Eight plus four-hard drive systems
Sixteen–hard-drive systems
Sixteen plus four hard-drive systems
Thirty two–hard-drive systems with a single PERC card Up to thirty two 2.5 inch, internal, hot-swappable SAS,
Thirty two–hard-drive systems with double PERC card
Optical drive
130
4 GB with two processors
Up to 768 GB
Up to 512 GB
Up to 128 GB
Up to four 3.5 inch, internal, hot-swappable SSD, SATA,
or SATA hard drives
hard-drive slots 0 through 3 (hard-drive slots 4 through 7
do not support any hard drives and are installed with
hard-drive blanks)
Up to eight 3.5 inch, internal, hot-swappable SAS, SATA,
or Nearline SAS hard drives
hard-drive slots 0 through 7
Up to twelve 3.5 inch, internal, hot-swappable SAS,
SATA, SATA SSD, or Nearline SAS hard drives
hard-drive slots 0 through 11
Up to eight 3.5 inch, internal, hot-swappable SAS, SATA,
SATA SSD, or Nearline SAS hard drives, and four Dell
PowerEdge Express Flash devices (PCIe SSDs)
Up to sixteen 2.5 inch, internal, hot-swappable SAS,
SATA, SATA SSD, or Nearline SAS hard drives
hard-drive slots 0 through 7 and 8 through 15
Up to sixteen 2.5 inch, internal, hot-swappable SAS,
SATA hard drives and four SATA SSDs
Up to sixteen 2.5 inch, internal, hot-swappable SAS,
SATA, or SATA SSD hard drives plus four PCIe SSDs
hard-drive slots 0 through 3, 0 through 7, and 8 through 15
SATA, SATA SSD, or Nearline SAS hard drives
hard-drive slots 0 through 7, 8 through 15, 16 through 23,
and 24 through 31
Up to thirty two 2.5 inch, internal, hot-swappable SAS,
SATA, SATA SSD, or Nearline SAS hard drives
hard-drive slots 0 through 7, 8 through 15, 0 through 7,
and 8 through 15
One optional SATA DVD-ROM drive or DVD+/-RW drive
NOTE: DVD devices are data only.