Additional Data
    Dimensions
    Weights
        Net Weight in kg: 0.500 kg
    Warranty Terms:       One Year limited Warranty
    Technical Link:      
http://www.apple.com/chde/support/
    Technical Support:    0848 000 132
    Packing List:         Apple Drive Module 80GB SATA
for Xserve

Additional Information
----------------------
Overview
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 Serial
ATA Drive Modules are available in capacities up to 1TB
and operate at 7200 rpm. The 80GB drive is equipped with
8MB of disk cache. The 1TB drive uses perpendicular
recording technology to achieve greater capacity while
increasing performance and is equipped with 16MB disk
cache. Both drives 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 80GB 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. 

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 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 increased protection and performance, add the Xserve
RAID card to your Xserve, which provides hardware RAID
0, 1 and 5 with 256MB of cache and a 72-hour cache
battery backup. 

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 32MB of disk cache,
operate at 7,200 revolutions per minute (rpm) and use a
protocol that enables fast data transfer to and from the
hard drive — 1.5 gigabytes of data per second. 

Apple Drive Module Serial ATA Compatibility
These Serial ATA Apple Drive Modules are qualified for
use only with the Intel-based Xserve. For drive module
compatibility with other Xserve systems, please see
http://docs.info.apple.com/article.html?artnum=107569