Apple 300GB SAS 15000rpm 300GB SAS internal hard drive

300GB SAS Drive Module for Xserve The Apple Drive Module (ADM) is a hot-pluggable hard drive in a special drive carrier module designed for easy server upgradeability and maintenance. Apple SAS Drive Modules are available in 73GB or 300GB capacities and operate at 15,000 rpm and are equipped with 16MB of disk cache \n\nSAS (Serial Attach SCSI) hard drives\nSAS drives deliver higher sequential performance (up to 125MB/s) and outstanding random access performance for the most demanding applications. Best-in-class mean time between failure (MTBF) ratings means you can trust Xserve to deliver ultimate reliability for critical server environments. SAS drives are ideal for applications requiring the highest performance, fastest random access times, and highest reliability available. SAS drive modules features a point-to-point interconnect to each drive, enabling each drive to be electrically isolated from each other so that drives don’t compete for bandwidth, and utilize a protocol that enables fast data transfer to and from the hard drive -- 3.0 gigabytes of data per second.\n\nSoftware and Hardware RAID options\nMac OS X Server includes AppleRAID, providing RAID 0 and 1 support through software, allowing you to increase either data redundancy or performance. Xserve features on-line rebuilding of RAID 1 volumes and is able to boot from RAID volumes. Choose any combination of mirroring or striping across the three drive bays. RAID configurations require a minimum of two ADM hard drives. For higher capacities, consider an Xserve RAID with an Apple Fibre Channel PCI card.\n\nApple Drive Module SAS Compatibility\nSAS Apple Drive Modules are compatible only with the new Intel-based Xserve. For older Xserve products, use the Apple Drive Module with Serial ATA or Ultra ATA (parallel) support.