URGENT - Adding a server to an HP MSA1500 SAN

Posted on 2007-08-03
Last Modified: 2013-11-14
We have a an HP Proliant DL 380 thats running out of space and we're going to add to our High Avaliability HP MSA1500 SAN.  Once on the MSA1500 we'll add 4 more disks to the Array.  It's my first time doing this and though i've done a fair bit of reading i still have a couple of  questions

What i'm going to do
1/         Back everything up to tape and snapshot

2/      Shutdown and install FC HBAs on the server and Install the latest downloaded versions of the HBA Drivers, ACU, ADU, and as we have multipathing, the MPIO Full featured DSM and MultiPath MAnager.
(Possibly a daft question, but should server be connected to the SAN for this)

3/       shutdown server and MSA1500 and move the db raid set (4x72) to the msa1500

4/       reboot MSA1500. Reboot db server. MSA1500 will detect the array and you can use the ACU to create the luns and present it to the db server when it comes online when server is working happily from SAN add 4 (or more) 72gb hdds to msa1500.

6/      in the ACU add 4 new disks to the new servers lun and increase the size of the array.

Do these steps look OK, is there anything more we should be doing?

My main question/concern is, as we all ready have one server connected to the SAN and that has a 4 x 300gb array, won't it also now see the new 4 disk array i've added and couldnt this cock things up.  I understand you can set Selective Storage Presentation in the ACU but am unsure at what stage I should be doing this.  My understanding of this Id use to restrict access logical drive.

Ive also tracked down some extensive documentation (1 page!!) from when the SAN was first set up and I see that the switch (running EziSwitch) has been set up for Fixed Zoning.  Isnt this also used for restricting access to LUNs?  

Any assistance/advice is much appreciated as we kick this off in less than 12 hours.
Question by:kswan_expert
    LVL 55

    Accepted Solution

    2/ doesn't matter whether it is connected or not to install MPIO etc.

    3/ you should be able to do it without sitching the MSA off but it is probably best to swap the disks with it unpowered if you can afford the downtime.

    All the rest looks OK except for one thing, you can set selective storage presentation through the ACU but you cannot set the operating ststem type for the connection, you have to do that through the serial cable using the command line interface. If it's Windows you might be OK without doing this.

    If SSP is not set at the moment then you need it turned on beforec onnecting or the new server will see the existing storage but if you set it now the current server(s) may suddenly not see it if you make a mistake, lets hope it's on already.

    CLI manual is at suggest you start with show connections and show ACL to see what is already configured.

    Author Comment

    Cheers Andy.  We didn't quite get there but you can have the points.

    On the server after moving disks to the SAN we could see the moved array in Disk Mgmt but there was also another disk, which we couldn't work out where it was getting it from.

    We tried setting the SSP so the newly installed HBA cards could only see the migrated disks.

    I'm wondering if it doesn't have something to with the Switch and being set for "Fixed Zoning"  We logged onto the switch but couldn't find any place obvious where this was set.

    We're now looking at getting an engineer in


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