Ok that helps to some extent but I don't see any options for creating a meta volume from the existing device.  I will check your document and see if I can find the right answer.  That's definitely been helpful from both of you.  Since I've never had the need to expand luns on a DMX or VMAX (without migration) this is all new to me.

You need to turn it into a meta-device to expand.

From:

jarbarian

To:

Daniel Jastredowski

Date:

05/01/2012 02:11 PM

Subject:

New message: "Increasing TDEV size on VMAX with

either SMC or SYMCLI"

EMC Community Network

Increasing TDEV size on VMAX with either SMC or SYMCLI

created by jarbarian in Symmetrix Support Forum - View the full discussion

Is it possible to increase the size of a Thin Device on the VMAX using

either SMC or SYMCLI?! I can do it easily on our CX arrays but I was

given a request to increase the size of of a thin lun and I can't for the

life of me find how to do it on SMC and SYMCLI isn't very helpful either.

I don't have a problem with fixing things on the VMAX but increasing the

size of a lun (from say 36GB to 100GB) doesn't seem to be easy to find. Is

there some way to do it like Unisphere or is this a case where I'll have

to create a larger device and migrate the data?

Any quick/easy answers appreciated!

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You cannot increase or decrease the size of an individual TDEV on a Symmetrix. What you can do is convert it into what we call a metavolume by connecting it to other unused devices. The additional devices will add capacity to the original device without changing any identifying information of it other than size. We offer either concatenated metavolumes or striped. See this document for more detail:

http://powerlink.emc.com/km/live1/en_US/Offering_Technical/Technical_Documentation/300-006-718.pdf

Something like this:

symconfigure -sid XXXX -cmd "form meta from dev AAAA, config=concatenated;

add dev BBBB to meta AAAA;" commit -nop

If pre-allocating:

symconfigure -sid XXXX -cmd "start allocate on tdev AAAA start_cyl=0

end_cyl=last_cyl;" commit -nop

From:

jarbarian

To:

Daniel Jastredowski

Date:

05/01/2012 02:55 PM

Subject:

New message: "Increasing TDEV size on VMAX with

either SMC or SYMCLI"

EMC Community Network

Re: Increasing TDEV size on VMAX with either SMC or SYMCLI

created by jarbarian in Symmetrix Support Forum - View the full discussion

Ok that helps to some extent but I don't see any options for creating a

meta volume from the existing device. I will check your document and see

if I can find the right answer. That's definitely been helpful from both

of you. Since I've never had the need to expand luns on a DMX or VMAX

(without migration) this is all new to me.

Reply to this message by replying to this email -or- go to the message on

ECN

Start a new discussion in Symmetrix Support Forum by email or at ECN

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Ok thanks for the help. I will try some of the options listed and report back.

You're missing the "add dev" portion of the command. I know this works.

symconfigure -sid XXXX -cmd "form meta from dev AAAA, config=concatenated; add dev BBBB to meta AAAA;" commit -nop

If pre-allocating:

symconfigure -sid XXXX -cmd "start allocate on tdev AAAA start_cyl=0 end_cyl=last_cyl;" commit -nop

Got it, thank you!

Yeah this isn’t working. I am getting the “missing action” error. Keep in mind I did put in the proper SID and device name.

Do you/anyone have steps or documents to perform this steps with Unisphere?  Thx

HI

you should refer to online help for both product SMC and unisphere for vmax

Form Meta dialog box

Use this dialog box to manage metadevices in your configuration.

This dialog box contains the following elements:

• Device Type
• Meta Config
• Stripe Size (Cyl / Blocks)
• Auto Select
• Number of Metas
• Number of Meta Members Including Head
• Available Unmapped Devices *
• Filtered/Unfiltered
• Meta Members
• Add -> *
• Add All-> *
• <-Remove
• <-Remove All
• Meta Head *
• Reserve
• Comments
• Expiration
• Apply
• Add to Config Session List

• Cancel
• Help

* SMC will consider the first device added to the meta device to be the meta head and will further filter the available devices according to its attributes.
 

================

note: smc EOPS in 2017

https://support.emc.com/products/6226_Symmetrix-Management-Console---SMC/Documentation/

https://support.emc.com/products/27045_Unisphere-for-VMAX/Documentation/

page 248 from https://support.emc.com/docu78882_Unisphere-for-VMAX-8.3.0-Online-Help.pdf?language=en_US

Regards,

Oleh

Following the steps on page 248 of document, I am not able to see all my existing tdev’s. Is that normal?

Good Day,

can you check if these devices are listed from symcli e.g. symdg list -sid XXX

can you run discovery in SE symcfg disco and in UNIVMAX UI.

regards,

Oleh

Note: Increasing a TDEV size is only available on VMAX3 and All Flash running HYPERMAX 5977. Older generation VMAXes (10K/20K/40K) will still require a meta device for expansion.