Intel® SRCSAS144E (Boiler Bay) SAS RAID Controller - PCI-E x4, 8P (4 int/4 ext) SAS RAID Controller - Intel® 80333 IOP @ 500 MHz, 128MB embedded memory. RoHS. Hardware Processor - Intel® IOP333 I/O processor operating at 500MHz with hardware XOR Memory - Includes 256MB of Registered ECC DDR2 400MHz SDRAM (with support for up to 1GB) PCI Interface - PCI Express* x8 connector (can be used in full duplex x16 slot) via an x8 electrical connection with automatic downrev to x4 Storage Interface - Eight SATA/SAS ports that support hot-plug capabilities and enclosure management Form Factor - Full-height, three-quarter length PCI: 9.5" x 4.4" (241 mm x 112 mm) Status Indicators - Audible alarm, I2C (for enclosure management) Key RAID Features RAID Levels Supported - 0, 1, 5, 10, and 50 Reliability - Optional battery-backup unit for up to 72 hours of cache data retention Scalability - Online RAID-level migration and capacity expansion without the need for reboot Configurability - Variable stripe size, variable cache options, drive coercion, array spanning, variable rebuild rate Availability - Auto hot-spare, auto rebuild, auto rebuild restore, drive roaming, controller migration, online capacity expansion, remote monitoring and management Manageability - Intel® RAID BIOS Console, Intel® RAID Web Console 2, Command Line Utilities