NAS with iSCSi

Dear Experts,

I am thinking of using iSCSi to establish a new drive. I have option of using the mapping hard drive with from network path or I can setup iSCSi.

I am using a NAS on RAID 5 with 2TB. I will be allocating approx 100GB(will expand the size as time goes by 20GB increment). This partition will be accessed by everyone approximate between 10 to 20 users. This partition will be used heavily(high IOs) and daily.

Should I setup iSCSi over network mapping? What are the Pros and Cons of using iSCSi and mapped network drive? I did some research online which most favors the iSCSi. I wish to confirm again to ensure that if iSCSi is the better choice. Thanks

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Paul MacDonaldDirector, Information SystemsCommented:
By definition a NAS is attached directly to the network and uses IP protocols for access.  A SAN can use iSCSI, but is on a dedicated storage network.
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
iSCSI works where a device connects to the storage and in your case it could be the server.  However, you cannot and should not have all 20 users or so connect to the storage via iSCSI.  iSCSI is more robust where you could have multiple NICs teamed together to talk to the storage ensuring server has a good connection to the storage.  Users will be connecting to a share on the server which actually resides on the iSCSI device.

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iSCSI is a poor mans SAN.

I would use it for clustering and VM's.

Using it for something like vmotion or as a shared cluster resource for failover makes the most sense.

If the NAS can join the AD,just set it up as a share and be done with it.
kisegiAuthor Commented:
my second question is:

Can I setup this iSCSi for applications that will be shared among multi-users? Will iSCSi better choice?
Can I setup this iSCSi for applications that will be shared among multi-users?

Yes,but it's not what you think.

The iSCSI target disk can only be mounted on one OS at a time,and from there it would be shared out.

You set up an iSCSI target disk,you connect it to a file server initiator and from there you would use the operating system to "share" the volume.

You would not have 10 users each with an iSCSI  initiator mounting the iSCSI disk on their own OS as corruption would occur.

Will iSCSi better choice?
Only as good as,but not better in any other situation except clustering and VM's.
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