Owners Manual

Drives
The PowerEdge C6520 system supports:
● 12 x 3.5-inch SAS/SATA (HDD/SSD) drives
● 24 x 2.5-inch SAS/SATA (HDD/SSD) /NVMe drive.
Table 8. Maximum number of supported drive options for the PowerEdge C6520 sled
Maximum number of drives in the
sled
Maximum number of drives assigned per sled
12 x 3.5-inch drive systems Three SAS or SATA drives and SATA SSDs per sled
24 x 2.5-inch Non-NVMe drives
configuration
Six SAS or SATA drives and SATA SSDs per sled
8 x 2.5-inch NVMe drives
configuration (2 NVMe drives per
sled / 8 NVMe drives per chassis)
The NVMe backplane supports either of these configurations:
● Two NVMe drives and four SAS or SATA drives and SATA SSDs per sled
NOTE: NVMe drives are limited to PCIe Gen3 speed.
● Six SAS or SATA drives and SATA SSDs per sled
24 x 2.5-inch NVMe drives
configuration
Six NVMe drives per sled
M.2 SATA drive (optional) The supported capacity of the M.2 SATA card is up to 960 GB
NOTE: The M.2 SATA card can be installed on the M.2 riser or on the BOSS card
Micro-SD card (optional) for boot
(up to 64 GB)
One on Riser 1a
NOTE: For more information about how to hot swap NVMe PCIe SSD U.2 device, see the Dell Express Flash NVMe PCIe
SSD User's Guide at https://www.dell.com/support Browse all Products > Data Center Infrastructure > Storage
Adapters & Controllers > Dell PowerEdge Express Flash NVMe PCIe SSD > Documentation > Manuals and
Documents.
Storage specifications
The PowerEdge C6520 sled supports.
Table 9. Storage controller cards for the system
Internal controllers External controllers
● PERC H745
● HBA345
● S150
● H345
● Boot Optimized Storage Subsystem (BOSS-S1): HWRAID
2 x M.2 SSDs
● 12 Gbps SAS Ext. HBA
Table 10. Supported RAID options with M.2 SATA drives
Options Single M.2 SATA drive without RAID Dual M.2 SATA drives with hardware
RAID
Hardware RAID No Yes
RAID Mode N/A RAID 1, RAID 0
Number of drives supported 1 2
Supported CPUs CPU 1 CPU 1
Technical specifications 7