The slices for the LUNs are not created until you bind a LUN in the Pool. In release 31the slices are not pre-allocated for either a Thin LUN or a Thick LUN. For Thick LUNs the capacity of the LUN will be subtracted from the available capacity, but the actual LBA's are not assigned until you start to write or if you format the LUN.
When you first create a Pool, it takes all the disks you allocate to the Pool and divides them into small raid groups (hidden). It then creates a number of LUNs on these hidden raid groups (also hidden). This is the initialization stage, before you start to create your user LUNs. This is the same process that runs when you create a new raid group. This does take some time and there are messages in the logs that indicate that the initialization is started and when it completes. The time to complete this stage varies based on what else is going on on the array.
kelleg
4 Operator
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4.5K Posts
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January 9th, 2013 14:00
The slices for the LUNs are not created until you bind a LUN in the Pool. In release 31the slices are not pre-allocated for either a Thin LUN or a Thick LUN. For Thick LUNs the capacity of the LUN will be subtracted from the available capacity, but the actual LBA's are not assigned until you start to write or if you format the LUN.
When you first create a Pool, it takes all the disks you allocate to the Pool and divides them into small raid groups (hidden). It then creates a number of LUNs on these hidden raid groups (also hidden). This is the initialization stage, before you start to create your user LUNs. This is the same process that runs when you create a new raid group. This does take some time and there are messages in the logs that indicate that the initialization is started and when it completes. The time to complete this stage varies based on what else is going on on the array.
glen
kelleg
4 Operator
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4.5K Posts
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January 9th, 2013 14:00
I believe the messages will be in the SP Event Logs - I normally don't look at the Evnet log, I look at the log files when I work a case.
This is what you should see for a new LUN:
"LUN initialization started"
Then when it's done:
"LUN initialization completed"
glen
D3STRUKT
3 Posts
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January 9th, 2013 14:00
Glen,
Thanks. What logs can I check?
Mike