Solved

FC and SAS disks

Posted on 2012-03-20
2
878 Views
Last Modified: 2012-06-22
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?
0
Comment
Question by:dedri
2 Comments
 
LVL 118

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE)
Andrew Hancock (VMware vExpert / EE MVE) earned 250 total points
ID: 37742581
0
 
LVL 47

Accepted Solution

by:
dlethe earned 250 total points
ID: 37742621
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

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I will show you HOW TO: Suppress Configuration Issues and Warnings Alert displayed in Summary status for ESXi 6.5 after enabling SSH or ESXi Shell.
In this article, I will show you HOW TO: Perform a Physical to Virtual (P2V) Conversion the easy way from a computer backup (image).
Teach the user how to edit .vmx files to add advanced configuration options Open vSphere Web Client: Edit Settings for a VM: Choose VM Options -> Advanced: Add Configuration Parameters:
This video shows you how easy it is to boot from ISO images for virtual machines with the ISO images stored on a local datastore on the ESXi host.

867 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now