Thanks for the info.
We are looking to add an immediate half terabyte to the network in the linux Enviroment. We are also going to be moving away from workstation backups and centrally locating files for backup. Our projected first year windows storage needs are 200GB. Our plan is one of two options.
1. Buy two RAID 5 shelves with 14 drive bays (pupoluted differently for each OS) for around 17,000 dollars. We will configure the shelves to allow full growth of drives 8-14 for future data needs. The shelves will be battery backed and have reduntant power/fans.
2. Option 2 is an HP MAS1000 14 bay SAN enclosure, 8 port SAN Switch, 14X73GB Drives, two controller cards (one for each OS), and cabling for around 24,000. The system will support an additional two HD shelves for about 3500 a piece plus HD for a very large data store capabilities.
Obvioously option 1 is cheaper, easy to upgrade (data storage wise) and easier to manage however there are some benefits to option two.
My problem is i have never played with SANS before and while I have read some of the technical white papers on the technology I am looking for a more top level view of the pros and cons of the current revision of SAN HW protocols. We may decide at this point to buy the two RAID shelves and keep an eye toward SAN/iScSI for future rollout (read...whaen the price drops)