In a small rev., Apple today announced support for 750GB drives in the Xserve RAID – now giving it a massive 10.5 TB capacity. Along with that also came a price drop.
The drives are available as a CTO option – the standard configs are 1TB, 3.5TB and 7TB
Full details are on the Xserve RAID site
by 
Doh! Bad admin no cookie!
Fixed
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Changing the world, one server at a time.
Joel Rennich
The dangers of copy and paste.
I shall go spend 30 minutes trying to use Vista as punishment.
We just updated our Xserve RAID to the new 1.5.1 firmware, and installed our own 750GB seagate drives into it.
Works like a charm. (This is not apple supported).
Existing LUN masks are unaffected. All that is lost is the ability to edit them.
You can hold on to your copy of 1.5 admin tools if you need to change
anything on existing configs.
I’ve read elsewhere that Apple is suggesting that people use Zoning in
order to restrict access, but at least on my Qlogic switch, zoning doesn’t
work at the LUN level (anyone know how to do this on the SANbox
1400?).
Has anyone verified that editing the LUN Masks using 1.5.0 actually
results in LUN Mask changes on the 1.5.1x firmware?
For us, lack of LUN Masking is a big drawback and removes the cheapest
way to share storage on an XServe RAID.
For those who haven’t used this, LUN Masking lets you use the
various LUNs in your XServe RAID as individual disks connected to
separate machines by restricting visibility to a subset of the machines on
the FC switch. In short, this allows you to use the XServe RAID on a
bunch of machines attached to a local FC network without having to
purchase XSan at $1000/seat. The downside is that you don’t get the
SAN capabilities. The upside is that each machine’s access is less
complicated (basically, it is a set of individual local disks).