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how to connect multiple iscsi initiator to a lun

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TALVASSON
Frequent Advisor

how to connect multiple iscsi initiator to a lun

hello
I had a LEFTHAND P4300
I had a BLADE BL460Cn it had card whith 2 ports

I arrive to assign a lun to one port, but I didn't know how on the LEFTHAND MANAGEMENT CONSOLE assign the 2 ports to my lun to had tolerance.

thanks
11 REPLIES
Steven Clementi
Honored Contributor

Re: how to connect multiple iscsi initiator to a lun

a Server nly has 1 IQN associated with it.

When you set up your iSCSI initiator, there shold be a multipath option.

What OS are you running?


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)
TALVASSON
Frequent Advisor

Re: how to connect multiple iscsi initiator to a lun

hello escuse me i have forget a point

my blade host a VMWARE esxi 3.5 on which a had multiple VM
Steven Clementi
Honored Contributor

Re: how to connect multiple iscsi initiator to a lun

I don't have an ESX 3.5 environment to step through the process anymore... but in 4.x.. you would add in a second vmKernel for your second iSCSI path, assign an Ip address to it and bind it to the adaptor. There are probably some mild variations to the process.


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)
TALVASSON
Frequent Advisor

Re: how to connect multiple iscsi initiator to a lun

hello i use 2 iscsi card, so i had 2 iqn

i had the same configuration on a other ESXI4, and the same problem

thanks
TALVASSON
Frequent Advisor

Re: how to connect multiple iscsi initiator to a lun

hello
i found that
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1007817

i was using a dedicate ISCSI card and after reading the kb i think that i should only used the iscsi soft initiator
am i right ?
thanks
Steven Clementi
Honored Contributor
Solution

Re: how to connect multiple iscsi initiator to a lun

Not sure if this helps the situation any...

but I've talked to several engineer's now that say that a the performance gain when using a hardware based iSCSI card is almost not noticable anymore as compared to the software iSCSI initiator and that you would really need a very big load to see any major difference... mainly due to the attention given to the development of the software/driver.


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)
TALVASSON
Frequent Advisor

Re: how to connect multiple iscsi initiator to a lun

thanks for your comments

just a last point

what didi you think about the kb ?

have a nice day
nicolas
Steven Clementi
Honored Contributor

Re: how to connect multiple iscsi initiator to a lun

The kb article refers to the Lefthand VSA... not a P4300 physical solution.

The VSA is a Virtual SAN/iQ OS that allows you to use the storage available to an ESX or Hyper-V server... to serve up iSCSI access to it.

I don't think it applies to you in this case since you stated you have a P4300. a P4300 usually means a physical server, or set of servers that run SAN/iQ.


Steven
Steven Clementi
HP Master ASE, Storage and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5)
RHCE
NPP3 (Nutanix Platform Professional)
TALVASSON
Frequent Advisor

Re: how to connect multiple iscsi initiator to a lun

Escuse me for this question but what is the difference between a VSA and a 4300 lefthand solution

nicolas
Uwe Zessin
Honored Contributor

Re: how to connect multiple iscsi initiator to a lun

VSA stands for V)irtual S)torage A)ppliance and means that the virtualization OS named SAN/iQ does not run on a physical server - it runs inside of a VMware ESX or Microsoft Hyper-V virtual machine.
.
TALVASSON
Frequent Advisor

Re: how to connect multiple iscsi initiator to a lun

ok
thanks i am in a physique P4300 and not a vsa environnement so the kb didn't apply

But in the first time whe where using dedicate iscsi card and i see on the lefthand, in the ISCSI session tab that i lost every minutes the connexion, and after using the software initiator it didn't

didi you know the hp recommandations for connexion to a san when using a esxi 4.1 (because i move to this one since my first question) ?
thanks