Express Flash drives (available Q2 2012) use PCIe and SSD technologies to provide performance,scalability, and optimal serviceability. Accelerated performance with high IOPs is made possiblewithout requiring processor resources or capturing DRAM. Also, Express Flash drives use astandardized 2.5-inch hot-plug form factor that saves critical PCIe slot space by moving drives fromthe back to the front of the system and allows a common management process for all drives.The PowerEdge R620 has an option to support up to two 2.5-inch, hot-plug Express Flash driveswith capacities of 175GB or 350GB.The R620 supports the external storage devices types listed in Table 13. For more information, seeDell.com/Storage.Device type DescriptionExternal tapeSupports connection to external USB tape products (supports bootfrom PowerVault™ RD1000)Supports connection to external SAS tape productsSupports connection to external FC tape productsSupports connection to external SCSI* tape products (legacy supportonly)Supports connection to external iSCSI tape productsNAS/IDM appliancesoftware Supports the NAS software stackPowerVault NAS Supports connection to current PowerVault NAS productsPowerVault DAS Supports connection to current PowerVault DAS (including JBODand RBOD enclosures) productsPowerVault SANSupports connection to current PowerVault SAN (includingEqualLogic™ iSCSI, Dell|EMC arrays, and JBOD disk enclosures)productsPowerVault IDM Supports connection to current PowerVault IDM (archive solutions,de-dup, B2D and data protection appliances) products*No SCSI HBA support for R620