Intel RS3DC040 Hardware User Guide - Page 39

Specification Intel® RAID Controller RS3WC080, RS3DC040, and RS3DC080 PCI Express bus data transfer rate • Up to 8GT/s per lane • x8 lane width Serial port 4-pin RS232-compatible connector (for manufacturing use only) SAS bus speed 12Gb/s SAS ports Cache configuration SAS connectors with four SAS ports each The Intel® RAID Controller RS3DC0x0 supports the following cache configuration: 1 GB - 72b arrangement (5) 128Mbx16, Double Data Rate III (DDR3) @ 1866 MHz with Intel® RAID Maintenance Free Backup support. Size of flash ROM for firmware 16 MB NVRAM 32 KB for storing RAID configurations Array Performance Features The following table shows the array performance features for the 12Gb/s Intel® RAID Controllers. Table 8. Array Performance Features Specification PCI Express host data transfer rate Drive data transfer rate Maximum scatter/gather I/O Maximum size of I/O requests Maximum queue tags per drive Strip sizes Maximum number of concurrent commands Intel® RAID Controller RS3WC080, RS3DC040, and RS3DC080 8GT/s per lane 12Gb/s per lane 80 elements 6.4 MB in 64-KB strips As many as the drive can accept 8 KB, 16 KB, 32 KB, 64 KB, 128 KB, 256 KB, 512 KB, or 1 MB 255 Fault Tolerance The following table lists the fault tolerance features for the 12Gb/s Intel® RAID Controllers. 12Gb/s Intel® RAID Controllers User Guide 29