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MSA2324FC - 1 vdisk with 1 volume shows at 2 drives in Windows 2003 R2 ENT

 
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ecomboy
Occasional Advisor

MSA2324FC - 1 vdisk with 1 volume shows at 2 drives in Windows 2003 R2 ENT

Hi, For hardware I have an HP2324FC msa with an MSA70 shelf. The disk are all identicle 300GB sas. No san switches are used, it's all attached DAS style to 2 HP DL385's each with two fiber HBA's.
Using the SMA on the MSA2324FC I create 1 raid 10 Vdisk with 8 subdisks for a total of 16 drives. Then I create my first volume and carve out 4 of those 16 disks. So 1 vdisk with 1 volume approx 1200GB.

I expect to go into the windows server, disk management, rescan disks and find 1 volume.
Proble: I get two volumes showing up. Both are the same size 1200gb.

I'd like to give this one volume a single drive letter and name. why do I see two volumes in disk manager?
Thank you.
Dave
3 REPLIES 3
kunalsahoo
Valued Contributor

Re: MSA2324FC - 1 vdisk with 1 volume shows at 2 drives in Windows 2003 R2 ENT

Hi ,

Are you using any multipathing software ?

if not you will se 2 luns for a single lun because you have 2 HBA cards insatlled and connected to MSA from servers.

if you have already installed multipathing and still you get this issue, then its quite obvious it is not working correctly.

Amol Garge
Trusted Contributor
Solution

Re: MSA2324FC - 1 vdisk with 1 volume shows at 2 drives in Windows 2003 R2 ENT

Dave,

Since you are using 2 FC HBA's, you see two LUN's instead of one, as the OS can see the same LUN twice.

Solution: Install MPIO DSM for MSA2300. You will see one one LUN and be able to format and assign drive letter to it.

Advantage:One of many is: even if one controller or FC HBA fails, you will not lose LUN access.

Link:

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=12169&prodSeriesId=3971478&swItem=MTX-02c6d4c8154c43518f5cc74514&prodNameId=3882365&swEnvOID=1005&swLang=13&taskId=135&mode=4&idx=0
ecomboy
Occasional Advisor

Re: MSA2324FC - 1 vdisk with 1 volume shows at 2 drives in Windows 2003 R2 ENT

Amol Garge resolved this for me. Thanks!!