The Apple Drive Module (ADM) is a hot-pluggable hard drive in a special drive carrier module designed for easy server upgradeability and maintenance. This 1TB Apple Serial ATA Drive Module operates at 7200-rpm and is equipped with 32MB of disk cache. Serial ATA Apple Drive Modules are 24x7 server-class rated and are ideal for applications needing capacity and great storage value with excellent performance.

Using up to three drive modules, the Xserve can be configured from 160GB to 3TB 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 to monitor the status of each hard drive and report pre-failure warnings before problems occur.