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milanm

5 Posts

42498

September 20th, 2011 11:00

Adding 2 additional hosts to MD3000

We recently purchased two new Poweredge R710s. We installed SAS cards in both and connected them to an MD3000 that already has two hosts connected, making 4 total hosts connected now. We rebooted both R710s after connecting them to the storage vault but they are still not seeing the vault. We are running Server2008 R2 SP1 on both new hosts. The cables that run from the new servers to the MD3000 were originally used on the first two hosts for redundancy. Do we need to reboot the MD3000 and the hosts in order for them to access the storage vault? Sorry if I'm not including any information you'd need, I am not well versed with SAS.

Dennis Smith

946 Posts

September 29th, 2011 08:00

According to the link from the user guide below, the unit will only support 4 hosts:

http://support.dell.com/support/edocs/systems/md3000/en/1stGen/HOM/HTML/about.htm#wp1091182

Hope that helps!

milanm

5 Posts

September 29th, 2011 13:00

Thanks for the reply Dennis. We now have 4 hosts on the MD3000, the problem is that the two Server 2008 hosts that I just connected to the vault do not see it. The original two that were connected still see it. We have one connection running from the vault to each of the 4 hosts. My question is if I need to reboot the MD3000 and all 4 hosts in order for the 2 new ones to see it. Any help would be apprecaited.

Dennis Smith

946 Posts

September 29th, 2011 14:00

Sorry, I mis-read the question. You should not have to reboot though. Let me check with some contacts on my end and see if we can figure out what's going on.

Dennis Smith

946 Posts

September 29th, 2011 14:00

Can you tell me if you have mapped the 2 new hosts to the MD3000? If not this can be done via MD Storage Manager (MDSM).

milanm

5 Posts

September 30th, 2011 10:00

I think that's what I missed, I went into MDSM and found the option to map the new hosts. Thanks a lot Dennis, you've been most helpful!

milanm

5 Posts

September 30th, 2011 11:00

Hi Dennis, I ran into another issue. Since I disconnected two of the SAS cables and connected them to the new hosts I'm not sure which HBA host port goes to which device. When I check the topology it still shows two connections to each original host. The connections show a MAC address but I'm not sure how to determine which port goes to which host so I can remove the correct ones.

milanm

5 Posts

September 30th, 2011 11:00

Sorry, not a MAC address but a world wide identifier.

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