Max Devices map on VMAX FA 4096

[Srinivas Adusumalli]

Guys,

 

 

After long time, Hope everybody doing great except Shoaib ...as you know shoiab :-)

 

Can we map more than 4096 devices on VMAX FA ?

 

Regards

Srini

[Shoaib Mohammed]

Dude....wat du u mean except shoaib......:)

Regards,

Shoaib Mohammed
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From: Srinivas Adusumalli <srinivasa....@gmail.com>

Sender: hyd-stro...@googlegroups.com

Date: Fri, 26 Oct 2012 13:40:50 -0500

To: HYD-STROAGE-PROS<hyd-stro...@googlegroups.com>

ReplyTo: hyd-stro...@googlegroups.com

Subject: Max Devices map on VMAX FA 4096

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[gnaneshwara prasad]

Shoaib is enjoying..:)))in CSC

I don't think we can map.

I faced this issue It fails after 4096 .

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[Shoaib Mohammed]

Forget VMAX...first tell me where did shoaib come in the middle of this discussion....:-)

Regards,

Shoaib Mohammed
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From: gnaneshwara prasad <pras...@gmail.com>

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Date: Sat, 27 Oct 2012 00:20:33 +0530

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ReplyTo: hyd-stro...@googlegroups.com

Subject: Re: Max Devices map on VMAX FA 4096

[Srinivas Adusumalli]

If I dont say that u dont come into picuture,  :-)

 

Gnani, its failing for me as well but looking for work around if any available.

 

Regards

Srini

[Muralidhar Kasagana]

Hi All,

Because of this limitations EMC recommending customers to go with big no of hyper sizes (34 gb or 64 gb) where ever possible.

Only alternative is to un map unused devices or move some hosts to new FAs

[Srinivas Karnati]

Hi Everyone,

We can use Dynamic Lun Addressing(theoritcially read in some book).

Regards
Srinivas Karnati

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Thanks & Regards
Srinivas Karnati

[Shoaib Mohammed]

This is a million dollar question I have. How?....what is the diff b/w dynamic lun addressing and dynamic lun masking..is there a diff at all in d the first place. Also what is "persistent lun masking". Second question, what is lun offset and its importance.... Guys if anyone can throw light on these...I've been tryin to figure these things out...

Regards,

Shoaib Mohammed
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-----Original Message-----
From: Srinivas Karnati <karnati.sr...@gmail.com>
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[Srinivas Karnati]

Hi,

Wrongly understood the question(thought how many devices we can assign
to host), in olden days(when i was team member in backup team)
perticular HBA's can't see more than 255 disks, for that we were
using Dynamic Lun Addressing from 5772(at Masking we can assign lun
address other than mapped address). Before 5772 it was lun offset.

For all your queries more detailed document attached.

Thanks & Regards
Srinivas Karnati

[Muralidhar Kasagana]

Hi Karnati,
Your are telling like EMC supporting engineers ...attaching Pdfs....:)

[Srinivas Karnati]

No No, just shoiab asked some questions right, i want him to be cleared.