Setting VMAX LUN id for a dev in an SG

I hate SMC, but thanks to both of you.  I will be working on it tomorrow thanks.

Hi Aces,

you can set as well the LUN ID via the SMC.

I can enter symaccess -sid 123 add devs -lun 2 even if they're aren't 2 devs in the SG?

If so, perfect thanks!

symaccess -sid 123 add devs -lun <#>

Totally agree Aces, but always you have to know hot to use the alternative way.

4_Aces wrote: I can enter symaccess -sid 123 add devs -lun 2 even if they're aren't 2 devs in the SG? If so, perfect thanks!

correct

I tried "symaccess -sid 1234 -name Storage_Group_SG add dev 6AAA -type stor -lun D3"

Error message is: '-lun' invalid option, since Storage_Group_SG doesn't have a masking view.

And when I go create a masking view, it tells me "the specified storage group is empty."

So how can I create a view, with one dev in the SG, using the LUN id of my choosing?

use decimal, not hex

So if I add the LUN first to SG, then create the VIEW, it will set the LUN # to what I want with the -lun option?

I am pretty sure it is supposed to be hex. Anyways, in this situation you can add the device to the storage group beforehand and when you create the view you can add the -lun option. Host lun addresses are only assigned when the view is created.

? The array uses hex, no?

Anyway I had to add a random dev to the SG, remove dev 6AAA, re-add 6AAA with the commands above, and then remove the random dev.  That got me the LUN ID I was looking for (D3 hex, or 211 dec).

Yep. So it would look like this:

symaccess -sid 83 create view -name temp_mv -sg temp_sg -ig ProductionTest_IG -pg 283_pg -lun 5

There is more info about this command in the Solutions Enabler 7.5 Array Control Guide. In short it says:

"When devices are added at the storage group creation time, do not specify a LUN address.

The LUN address is determined when the masking view is created.

LUN addresses should only be supplied if the storage group is already contained within a

view. In this case, a single LUN can be given, or one for each device range. If the LUN

address is not specified, the Symmetrix array will assign the LUN address."

create view -sid SymmID -name ViewName -sg StorageGroupName -pg PortGroupName -ig InitiatorGroupName [ < [-reserve_id ResvID[,ResvID[,ResvID...]]] [-lun Addr] [-ckd] [-celerra] [-rp]

It's worth noting that if you have multiple devices in a storage group when you create a view, the the HLU's appear to be assigned in device order (only briefly tested this behaviour) 

We use LUN 0 for boot devices and if for some reason the boot disk is not the lowest device number then the view is created with that device alone and then all other devices are added later.

Hello Aces,

Try the following:

Create the Storage Group with the device:

symaccess -sid 1234 -name Storage_Group -type stor -dev 6AAA

Create the masking view and assign the LUN ID:

symaccess -sid 1234 create view -name Masking_View -sg Storage_Group -ig Initiator_Group -pg Port_Group -lun D3

Next time you want to add another device with some LUN ID in the sg Storage_Group:

symaccess -sid 1234 -name Storage_Group -type stor add dev 6AAB -lun E4

Done!!!