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Connecting a NAS drive in order to be accessible from 2 Servers at the same time

Posted on 2012-03-16
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Last Modified: 2012-03-18
Dear All,

I have 2 Servers (one with Windows Server 2008 and one with 2003) which are connected (via SAS Cables) with Fujitsu Eternus DX60 Network Storage.

Network Storage has 2 partitions and both Servers have access to these.

I have noticed that when using the 2008 Server to modify data from Network Storage, changes do not apply when accessing same partitions from the 2003 Server.

I have also noticed that when restarting the 2003 Server and while on Boot, windows are running check disk for the Network Storage Drives with the below message:
“One of the disks needs to be checked for consistency press any key to skip….”

Then, after the 2003 Server logs in the Network Storage Data (accessed by this server) are “updated/common” with 2008 Server.

Q1) Is it possible to have both Servers "connected/mounted” at the same time  on the same Network Storage Partition… In other words, is my NAS (or NAS generally) designed to support this feature?

Or should every Server have its own dedicated partition on a NAS?

Q2) If the aforementioned feature is supported, what should I configure in order to access the current/same NAS data from both Servers?

Thanks for your help,
mamelas
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Question by:mamelas
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dlethe earned 500 total points
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The DX60 supports NFS, so you are good to go.  As many machines as you want can mount it concurrently.  But beware, FILE-level record locking under NFS is crap, and isn't very reliable.  You can have as many systems as you want reading/writing, deleting, adding files, but get two or more systems doing I/O at the same time with the same file then you run risk of corruption depending on the version of NFS, what operating system(s) the other computers are using, and what system calls the applications are using.

So if you do need to have multiple systems with the same file opened in R/W mode at the same time, you need to check release notes and/or contract the mfg.

Removing the above caveat
1) Yes
2) Just configure NFS services, and if clients are windows, then you can use the free UNIX NFS services. You would use NFS client to permanently map letter "N" as example to a specific directory on any number of machines.
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