I saw NAS (Network-Attached Storage) and SAN (Storage Area Network).

Question:  Why do they have both (NAS & SAN)?

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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.

Shaun VermaakTechnical SpecialistCommented:
Storage area networks (SANs) and network attached storage (NAS) both provide networked storage solutions. A NAS is a single storage device that operates on data files, while a SAN is a local network of multiple devices.

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
Sajid Shaik MSr. System AdminCommented:
the major difference in both are block level and file level..

Seth SimmonsSr. Systems AdministratorCommented:
they perform 2 different functions

a SAN has storage you directly attach to a system (over fibre channel or iSCSI) as if it was a local drive
if you had a 5tb SAN, you could create a 1tb LUN and attach to a VMware ESX server which appears to the server as a local data store that you can use for virtual machines, for example

a NAS is more for file sharing.  you can create a LUN and that that can be available over different protocols such as CIFS (for windows clients as a network file share) or NFS (for linux, VMware hosts)

there are some vendors like Pure that are just SAN and present storage to hosts or NetAPP that can do both having SAN volumes for hosts and NAS file shares for clients (and of course many other vendors in this space)
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

From novice to tech pro — start learning today.