Dell PowerEdge R420 Technical Guide - Page 22

External storage External storage for the R420 is available through optional HBAs for SAS and iSCSI. For more information, see Dell.com/Storage. Storage controllers Dell provides highly capable RAID options for you to ensure that your data remains safe. Dell's RAID controller options offer impressive performance improvements, including the following features: • FastPath™ I/O: This feature can help accelerate performance when operating on SSDs. • Split mirror: This function allows you to break mirrored disk connection in order to quickly replace a drive. • Physical disk power management (Dimmer Switch™): This feature allows for power control of spare or idle drives, which can save energy and operating expenses. Supported RAID controllers The newest line of PERC (PowerEdge RAID Controller) cards offer high I/O performance for database applications and streaming digital media environments. The internal RAID controllers have a dedicated connection to the system board. The R420 supports the new PERC 8 family of controllers with improved functionality and faster performance. The default PERC for the R420 is a mini- type PERC. The R420 also supports the new software RAID solution that supports RAID 0, 1, 5 and 10. The R420 supports the PERC cards listed in Table 12. For more information about the latest PERC offerings, see Dell.com/PERC. Controller Description Table 12. Supported RAID controllers Features RAID modes Form factor supported Usage model PERC H810 External Eight- port, external and 6Gp/s PCIe RAID controller PERC H710P Eight- port, internal 6Gb/s Internal PCIe RAID controller PERC H710 Eight- port, internal 6Gb/s Internal PCIe RAID controller PERC H310 Eight- port, internal 6Gb/s Internal PCIe RAID Includes 1GB NV DDR3 cache, premium performance and feature set, security SED/EKMS, and SSD as cache 0, 1, 10, 5, 50, 6, 60 Includes 1GB NV DDR3 cache, premium performance and feature set, security SED/EKMS, and SSD as cache 0, 1, 10, 5, 50, 6, 60 Includes 512MB NV DDR3 cache, advanced feature set, security SED/EKMS Supports hot- plug drives, expansion, passthrough 0, 1, 10, 5, 50, 6, 60 0, 1, 10, 5, 50 Adapter Integrated mini- type Integrated mini- type Integrated mini- type Premium performance Premium performance Performance Value 22 PowerEdge R420 Technical Guide