NAS with iSCSI in comparision with iSCSI SAN

Posted on 2012-08-20
Last Modified: 2012-09-11
Hi @ all

Years ago the main advantage to use a SAN instead of a NAS was that in a SAN environment the OS could manage the Filesystem on his LUN and you could write and change files on block level, in comparision of NAS you couldn't right?

But since all new business NAS now can communicate over iSCSI, you can direct attach a LUN on a NAS aswell to let the OS manage the filesystem and write on block level, right?

Now, what ar the advantages of a iSCSI SAN in comparision of an iSCSI enabled NAS?

Thanks for your help
Question by:ECOteam
    1 Comment
    LVL 55

    Accepted Solution

    It's generally a difference in redundancy levels, a cheap NAS with iSCSI may be a single point of failure althoug hit may be possible to cluster two of them for high availability. A hardware iSCSI based SAN is more likely to have two independant controllers and address redundancy that way. That is a bit of a generality though, NetApp filers for example provide redundancy through dual controllers and they're NAS/SAN hybrids, and single controller variants of hardware targets are generally available.

    As to performance it's really down to the number of spindles, SSDs, cache etc so it's not possible to say one is faster than the other generically.

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Looking for New Ways to Advertise?

    Engage with tech pros in our community with native advertising, as a Vendor Expert, and more.

    Solid State Drive Performance Tips: Solid state storage technology is now a standard.  After testing and using several different brands and revisions of SSD's over the years I have put together a collection of tips,tools and suggestions that I ha…
    Lets start to have a small explanation what is VAAI(vStorage API for Array Integration ) and what are the benefits using it. VAAI is an API framework in VMware that enable some Storage tasks. It first presented in ESXi 4.1, but only after 5.x sup…
    This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
    This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

    760 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

    10 Experts available now in Live!

    Get 1:1 Help Now