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September 1st, 2011 19:00

What is the recommenden number of FA ports which can be mapped for a VMWARE ESX server from VMAX?

What is the recommenden number of FA ports which can be mapped for a VMWARE ESX server from VMAX?

2 Intern

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20.4K Posts

September 1st, 2011 20:00

try to have even and odd FAs zoned to each HBA, if you have multiple engines  try to utilize them as well.

16 Posts

September 2nd, 2011 06:00

Yes, but my doubt now is how many FA ports I can map. What is the count of FA ports recommended?

Normally we map 4 FA ports, but is it recommended to go for 8 FA ports?

Also need to know if there is any primus/document, where it is mentioned about the count....

1.3K Posts

September 2nd, 2011 07:00

Each pair of FA ports is tied to a CPU.  Each CPU is capable of x number of IOPs.  So for one server, 2 ports may be plenty and for another server 8 ports may not be enough.  Assume that a CPU can do between 3,000-5,000 on average over a period of time.  More if the workload is mostly reads, maybe less if the workload is mostly writes.

2 Intern

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20.4K Posts

September 2nd, 2011 07:00

It’s all about how many resources do you need. I have not see a document that say you must have 4 FAs or 8 FAs

2 Intern

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1.3K Posts

September 2nd, 2011 17:00

consider the pair of FA are 11g:A,6g:A . Did you mean this 3K-5K IOPS shared between 11g:A and 11g:B? Or can i expect 3K-5K each from 11g:A and 11g:B?

Just want to clarify if the numbers as based on FA itself or the ports coming from them

1.3K Posts

September 2nd, 2011 18:00

11G A and B or 1 and 2 share the same CPU.

You should never use the 1 and 2 port ( or A and B port ) of one FA CPU for the same host.  It makes no sense.

2 Intern

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1.3K Posts

September 3rd, 2011 17:00

so it sounds like from A and B ports together i am going to get only 3-5K; right?

2 Intern

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1.3K Posts

September 3rd, 2011 17:00

As you said nobody uses A and B port on the  same host. But some other host is definitly going to use it. Regardless of the host which is putting the load, the load ends up  on the FA or the CPU managing them.

1.3K Posts

September 3rd, 2011 17:00

Again, never use the same CPU from 1 host.

The CPU can do anywhere from 3,000 to 30,000 IOs/sec with small block workloads, but the maximum depends on the IO type and the number of devices.  The 3-5k is a good planning number for lower than 100% utilization and most workload mixes.

448 Posts

September 5th, 2011 11:00

What are you using for multi-pathing software?  PowerpathVE or the built in load balancing.  

16 Posts

September 13th, 2011 00:00

I wil check that n let you know Rob.

16 Posts

September 13th, 2011 00:00

So shall I drop a quetion here...
So what is the recommended IOPs for a particular FA port (for eg: 16G port 0)
Also what can be the IOPs for the whole direcctor (for eg: dir 16 which includes all FAs 16e 16f 16g and 16h), based on that I can decide....

1.3K Posts

September 13th, 2011 03:00

Jose, I think I already answered your question on IOPs on a FA CPU (two ports).

There are 4 FA CPUs per director, 8 per engine and the IOPs scale nearly linearly.

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