FC and SAS disks

Could you tell me what is the difference between FC and SAS disks.
Recently we bought 600GB 6GB/s SAS disks 15k, and now we need to buy FC and as I see from the offer from different company FC are two times more expencive than SAS disks, even though I am buying 450 GB FC disks.
Why 450GB disks are so expensive? What they provide more than SAS  6GB/s SAS disks 15k. Their performance is better or  anything else?
dedriAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
0
DavidPresidentCommented:
Well, both are premium disks for enterprise use, both dual ported, both high end, both serial scsi protocol (so same programming methodologies).

In a nutshell, the market moved from FC to SAS at the high-end. Reason is that the low-cost SATA drives are using mostly same chipsets so low-cost SATA drives are driving costs down for SAS.

Forget trying to "convert" one to the other.  This can be done, but it costs much more then the cost of a disk to do so, and conversion only makes sense for a large number of drives as it takes quite a bit of horsepower and electronics to do so.

FC is more expensive because they have always been more expensive, due to economy of scale.   FC DOES have some engineering benefits due to switching, but inside an enclosure there is no reason you need to use FC other then it may be the only game in town.

If your enclosures are designed for FC, and you can't find FC disks at the right price, and don't want to risk going to "used" drives, then you'll simply have to change to another type of subsystem.    FC & SAS aren't interchangeable.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Server Hardware

From novice to tech pro — start learning today.