磁盘驱动器
| 硬盘容量 |
500 GB |
| 硬盘转速 |
7200 RPM |
| 硬盘接口 |
Serial ATA |
| 传动装置，缓冲区大小 |
8 MB |
Drive Module 500GB Serial ATA
The Apple Drive Module (ADM) is a hot-pluggable Serial ATA hard drive in a special drive carrier module designed for easy server upgradeability and maintenance. Apple Drive Modules are available in 80GB with 8MB of disk cache and 500GB with 16MB of disk cache capacities, both operating at 7200 rpm. A 74GB 10,000rpm Apple Drive Module is also available, delivering higher disk throughput with faster access speeds over 7200rpm drives, ideal for I/O intensive server applications such as e-mail servers and database servers.
Using up to three ADMs, the Xserve G5 can be configured from 80 to 1500 gigabytes of internal storage. Unpopulated bays ship with a blank drive carrier which can be replaced with a drive module at any time - even if the server is running - so its easy to add storage capacity as your server needs grow.
Each ADM has two LED activity lights - one indicating drive activity and one indicating drive status. All Apple Drive Modules support SMART - Self Monitoring and Reporting Technology - allowing the hardware monitoring tools including with Xserve G5 to monitor the status of each hard drive and report pre-failure warnings before problems occur.
Software and Hardware RAID options
Mac OS X Server includes AppleRAID, providing RAID 0 and 1 support through software, allowing you to increase either data redundancy or performance. Xserve G5 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 level of RAID capability, consider the Hardware RAID PCI card CTO option for the lower PCI slot. For higher capacities, consider an Xserve RAID with an Apple Fibre Channel PCI card.
Serial ATA hard drives
Serial ATA hard drives combine low cost with excellent performance. Serial ATA drives features a point-to-point interconnect to that each drive is electrically isolated from the other and multiple drives don't compete for bandwidth. The drives have 8MB or 16GB of disk cache, operate at 7,200 or 10,000 revolutions per minute (rpm) and use a protocol that enables faster data transfer to and from the hard drive — 1.5 gigabytes of data per second.
Apple Drive Module Serial ATA Compatibility
Apple Drive Modules with Serial ATA drives are compatible with Xserve G5 running Mac OS X Server 10.4.3 or later. For Xserve RAID or previous Xserve (G4 based) products, use the Apple Drive Module with Ultra ATA (parallel) support only.
