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July 4th, 2012 06:00

Virtual Lun migration

Hi,

What is configured and unconfigured space used in virtual lun migration? I know that in configured space after migration the primary device will be intact but in case of unconfigured space the primary dev will be deleted once migration is over.

Thanks,

Shailender

93 Posts

July 4th, 2012 08:00

Hi,

Unconfigured space is the free space in your symmetrix. A new device will be created  by symmetrix from the free space available in your symmetrix and migration will be performed to this target device when you are using the option: migrating to unconfigured space.

However, in case of configured, you can select any other symmetrix device that was created by you as a target of migration.

You can find the detailed explaination in Document available @ http://powerlink.emc.com/km/live1/en_US/Offering_Technical/Technical_Documentation/300-009-147.pdf

Thanks

Amita Wasson

93 Posts

July 4th, 2012 07:00

Hi,

V-LUN Migration uses two types of data movements :migration to configured or migration to unconfigured.

If you are migrating to unconfigured the target device is created from the free pool.

If you are migrating to configured, the target would be a configured symmetrix device which can be selected by the user or automatically selected by symmetrix.

Thanks

Amita Wasson

July 4th, 2012 07:00

M not getting u clearly....wats the difference between getting from free pool or created by user?.....Please explain a bit more.

July 4th, 2012 08:00

Will someone explain me this in bit detail?

July 4th, 2012 08:00

Now I got it....in case of configured when we specify the file we provide the source and target devices while in case of unconfigured we just specify the source devices.

Thanks a million Amita.

859 Posts

July 6th, 2012 23:00

or in simple words, moving to configured space is swapping the two devices and unconfigured space is moving the device to newly created one in the target pool.

regards.

Saurabh

July 7th, 2012 12:00

Thanks Saurabh.....

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