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reference: http://linuxmafia.com/faq/Hardware/sata.html== 3ware 9550SX family ==Applied Micro Circuits (NASDAQ:AMCC) has introduced its next generation of hardware RAID controllers. The 3ware 9550SX is 200% faster than the company's previous generation 9500S, delivering RAID 5 writes at over 380MB/sec and RAID 5 reads at more than 800MB/sec. and supports the Serial ATA 2.5 specification and a PCI-X host interface.The 3ware 9550SX family is based on StorSwitch™, AMCC's seventh generation non-blocking switched fabric storage architecture and comprises the highest performing, most feature-rich hardware RAID controllers developed by the company to date.The 9550SX feature set also includes StreamFusion, a dynamic cache allocation algorithm for performance optimization in multi-stream sequential I/O applications, StorSave, performance optimization in critical RAID modes, and award-winning Multi-lane connectivity. The new flagship series also delivers increased performance with 3Gb/s wire speeds and Native Command Queuing support (NCQ)."Serial ATA II has evolved to become a robust, enterprise-ready drive interface and when coupled with the 3ware 9550SX, the solution delivers the critical performance required for high-density computing applications within and beyond the data center," said Faye Pairman, Senior Vice President and General Manager, AMCC Storage Business. "This combination promises to blow open the market for Serial ATA by replacing older technologies with state-of-the-art performance and reliability at a fraction of the cost. AMCC is committed to delivering RAID products that dramatically improve the price/performance paradigm for enterprise and vertical market storage applications as we have once again demonstrated with the introduction of our 3ware 9550SX product line."The 3ware 9550SX-4LP 4-port kit and the 3ware 9550SX-8LP 8-port kit, both in low profile form factors, are available today with MSRP's of $395 and $595 respectively. The 12- and 16-port kits will be available later in 2005 with MSRP's of $795 and $995. 3ware 9550SX kits are backed by a 3-year warranty and are compatible with Red Hat® Linux, SuSE® Linux, FreeBSD, and Microsoft® Windows® 2003/XP/2000 operating systems.== 3ware controllers to consider == 3ware 9550SX-4LP 64-bit/133MHz PCI-X SATA II Raid Controller Card RAID 0,/1/10/5/50, Single Disk and JBOD 9550SX-4LP 3ware 9650SE-4LPML PCI Express Lanes: 4 SATA II Controller Card RAID Levels 0, 1, 5, 10, Single Disk, JBOD 9650SE-4LPML 3ware 9550SX-8LP 64-bit/133MHz PCI-X SATA II Raid Controller Card RAID 0,/1/10/5/50, Single Disk and JBOD 9550SX-8LP 3ware 9550SXU-4LP 64-bit/133MHz PCI-X SATA II RAID RoHS Controller Card RAID 0,/1/10/5/50, Single Disk and JBOD 9550SXU-4LP