SSD Raid0 recommended block size

Hello,

I to create a RAID 0 with two Vertex 2 on a Intel ICH10 RAID controller. What is the recommended block size for SSDs. When you google the issue then you find people saying something between 4k and 128k. Well that is a pretty wide range. What is the best block size. As small as possible or a big as possible. As the end result of course I want the best read\write performance.

People's personal expiriences are very welcome.

Thank you
Marcus
Mc2102Asked:
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.

DavidPresidentCommented:
Best performance is relative to your specific I/O requirements.  Do you do more random, read, writes, sequential .. what is the mix now?  Are you doing SQL server, video streaming, what?

0
Mc2102Author Commented:
The machine is running Windows 7 and will be used for daily work like Office etc and Gaming. No database server or any other of these heavy usage apps.
0
DavidPresidentCommented:
Then it would be foolish to RAID0 the SSDs.  Go RAID1.
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

Mc2102Author Commented:
Why? RAID1 only gives me redundancy but not a performance boost. Its just a workstation.
0
DavidPresidentCommented:
You have bad information.   Performance has two components IOPS and throughput.  Performance is mutually exclusive. The higher the throughput, lower IOPs.  You'll be doing more small block and random I/O then large block sequential.

Furthermore, if you turn of that cheesy piece of junk RAID controller chip (the work is done by the device driver), and let the O/S do software RAID1, then you get load balancing.  Each disk in perfect world does 50% of the reads.  

You need RAID1, not RAID0 due to how you use the computer.
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
CallandorCommented:
SSDs don't behave like regular hard drives, so the rules for RAID setups are not the same.  Most RAID setups are geared to get around drive head latencies, which SSDs do not have.

In addition, SSDs in RAID arrays do not support TRIM - you still have regular garbage collection, but that is not as efficient as TRIM, and your drives will suffer once they start using up all free space.
0
Mc2102Author Commented:
Thank you for the helpfull information.
0
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
Hardware

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.