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Remove an R1 device from a clone and SRDF/A relationship

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I have an SRDF/A relationship between an R1 and R2 device.  The R1 is also a target device for clone.  Now business requirements have changed, and I do not need to replicate the R1 anymore but is does need to remain a target for the clone.

Product Model = VMAX-1

Microcode Version 5874

How can this be done?

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dynamox
6 Thallium

Re: Remove an R1 device from a clone and SRDF/A relationship

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i think i got it now

1) suspend srdf pair using device file, file looks like this:

303C 1FD2

symrdf -f file.txt suspend -sid 123 -rdfg <rdfg #> -cons_exempt

2) delete rdf pair

symrdf -f file.txt deletepair -sid 123 -rdfg <rdfg #>

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dynamox
6 Thallium

Re: Remove an R1 device from a clone and SRDF/A relationship

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split SRDF between source and target and deletepair.

symrdf split -g <blah> -sid 123

symrdf deletepair -g <blah> -sid 123

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2 Bronze

Re: Remove an R1 device from a clone and SRDF/A relationship

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Dynamox,

Thank you for the quick response.  I should have addedd that the device is part of a larger SRDF device group that needs to continue replicating.  Can I just delete the device pair using a file and will that leave the rest of the devices in the group unaffected?

Regards,

Shannon

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Re: Remove an R1 device from a clone and SRDF/A relationship

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Dynamox,

Thank you for the quick response. I should have added that the device is part of a larger SRDF device group that needs to continue replicating. Can I just delete the device pair using a file and will that leave the rest of the devices in the group unaffected?

Regards,

Shannon

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dynamox
6 Thallium

Re: Remove an R1 device from a clone and SRDF/A relationship

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i do not have as much experience with SRDF/A as i have with SRDF/S but something tells me that SRDF/A session consistency will not allow you to modify only one device in SRDF/A group ..making you have to move that pair to another RDFG group and then destroying that relationship. Try to split and deletepair with a file first ..if that does not work you will need to move those two devices to another group. Or you could switch the whole SRDF group to adaptive copy disk mode and then you could deletepair easily. You just have to understand that you lose your DR copy consistency when you run in acp mode ..but it will only take a few minutes to delete that relationship so may not be a big deal.

dynamox
6 Thallium

Re: Remove an R1 device from a clone and SRDF/A relationship

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also take a look at "-cons_exempt" option

For an SRDF group supporting an active SRDF/A session, allows devices to be added, removed, or
suspended without affecting the state of the SRDF/A session or requiring that other devices in the session be
suspended in order to perform the control operation.

dynamox
6 Thallium

Re: Remove an R1 device from a clone and SRDF/A relationship

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i think i got it now

1) suspend srdf pair using device file, file looks like this:

303C 1FD2

symrdf -f file.txt suspend -sid 123 -rdfg <rdfg #> -cons_exempt

2) delete rdf pair

symrdf -f file.txt deletepair -sid 123 -rdfg <rdfg #>

View solution in original post

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1thumb
2 Bronze

Re: Remove an R1 device from a clone and SRDF/A relationship

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Thank You I will look at that option.

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1thumb
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Re: Remove an R1 device from a clone and SRDF/A relationship

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Thank You Dynamox,

I am trying it now, will let you know the results.

Shannon

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dynamox
6 Thallium

Re: Remove an R1 device from a clone and SRDF/A relationship

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please do

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