These are nearly perfect xServe RAID units with 14 500GB hard drives, complete in the box with all the power and fiber cables. Have 14 500GB PATA drives installed.From everymac.com: The Apple Xserve RAID (SFP) is a 3U rack mountable storage solution
designed for use with an Xserve or Power Macintosh G5 with an installed
dual-channel 2 GB Apple Fibre Channel PCI-X card (sold separately).
The Xserve RAID (SFP) features fourteen independent ATA/100 drive
channels, dual independent RAID controllers each with 512 MB of
controller cache memory, 8 MB of on drive cache per drive, a dual 2.0
GB Fibre Channel host interface with SPF connectors, redundant
load-sharing hot-swappable 450W power supplies, redundant hot-swappable
"cooling modules", and optional "Cache Battery Backup Modules" that
provide 72 hours of backup power.
This model is quite similar to the original Xserve RAID, but has 512 MB of controller cache memory standard and SPF connectors.It
supports a total of fourteen drives, and Apple has increased the
maximum "officially" supported capacity several times -- it was 3.5 TB
in RAID 0 on January 6, 2004 when it was introduced -- and 5.6 TB on
October 19, 2004, and 7.0 TB on September 13, 2005 as new Xserve models
were introduced and larger drives became available.
The final
configurations -- discontinued February 19, 2008 -- were configured
with either four 250 GB (M9721LL/A), seven 500 GB (M9721LL/A), or
fourteen (MA209LL/A) 500 GB 7200 RPM ATA/100 drives (Apple Drive
Modules).
