Dell PowerEdge M820 Technical Guide - Page 21
Number, of drives, Drive types, Backplane, Controller, factor, Speed, Capacities
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The Dell PowerEdge M820 provides comprehensive internal storage options, including several drive types and storage controllers to choose from. Express Flash PCIe SSD is a new option that can provide vastly accelerated performance over previous technologies. Dell Express Flash drives use PCIe lanes to connect directly to the processor and chipset and are easily accessible by hot-plug drive bay. The M820 is available in three different hard-drive backplane options. Table 10 lists the options for backplanes, hard-drive controllers, and drive types for the M820. Number of drives 4 4 2 Drive types SAS HDD SAS HDD, Express Flash PCIe SSD SAS HDD Backplane SAS SAS (2) PCIe SSD (2) SAS Controller MiniPERC card MiniPERC card, PCIe extender MiniPERC card The M820 supports up to four 2.5-inch SAS or two 2.5-inch PCIe SSDs and shown in Table 11. For the latest information on supported hard drives, visit Dell.com. Form factor 2.5" Type Nearline SAS (6Gb) SAS (6Gb) SAS (6Gb) SAS SSD (SLC, 6Gb) Express Flash PCIe SSD (SLC) Speed (rpm) 7.2K 10K 15K N/A N/A Capacities 500GB, 1TB, 1TB (SED) 300GB, 600GB, 900GB, 900GB (SED) 146GB, 300GB, 300GB (SED) 200GB, 400GB 175GB, 350GB Express Flash drives use PCIe and SSD technologies to provide performance, scalability, and optimal serviceability. Accelerated performance with high IOPs is made possible without requiring processor resources or capturing DRAM. Also, Express Flash drives use a standardized, 2.5-inch hot-plug form factor, which allows a common management process for all drives. 21 PowerEdge M820 Technical Guide
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