DellPowerEdge R815 Technical Guide 4011.2 Storage Controllers11.2.1 PERC H200The H200 SAS HBA is an expansion card that plugs into the dedicated internal SAS slot on Riser1. Itincorporates two four-channel 6 Gb/s SAS IOCs for connection to SAS hard disk drives. It is designedin a form factor that allows the same card to be used in other 11G 2U rack-form factor platforms.11.2.2 PERC H700Customers who want an internal RAID solution should select the H700. This H700 card has its ownprocessor with a PCI Express Gen2 host interface and DDR2 memory and installs into the dedicatedinternal SAS slot on Riser1. A battery is also available for backup. It supports the internal 6 Gb/sbackplane interface for internal storage options (SAS, SATA, or SSD HDD). PowerEdge R815 supports512MB cache on the internal H700.11.2.3 PERC H800PowerEdge R815 can support up to two PERC H800 adapter cards for access to external SAS direct-attach storage. Features of the PERC H800 include:• LSI 2108 (Liberator) ROC• 6 Gb/s SAS• PCI-E Gen2 x8• 800MT/s Core PPC• DDR2 800 mini-DIMM• Dual Mini-SAS Connectors• Supports connection to 6 Gb/s enclosures onlySee Table 13 for more information on storage card support.A maximum of 2 external storage controllers (PERC H800) are allowed in the system in addition tothe integrated storage controller.