Hello Good People,
Today i started using the new SnapDrive Version 7 on our Hyper-V 2012 server with DataONTAP 8.0 7-mode and while creating a SnapInfo LUN from the SnapDrive GUI, I let SnapDrive automatically create the iGroup for me and notices it created an iGroup type of "windows" but a LUN type of "Hyper-V". I found the below documentation whcih states this could lead to problems with alignment and would now appreciate if anyone could clarify and let me know any problems i would face have a mix for iGroup / LUN types as we have many of these now i check.
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ostype (LUN multiprotocol type) guidelines
The ostype (sometimes called LUN multiprotocol type) specifies the OS of the host accessing the LUN. It also determines the layout of data on the LUN, the geometry used to access that data, and the minimum and maximum size of the LUN.
Not all Data ONTAP versions support all LUN multiprotocol types. You should consult the Interoperability Matrix to get the most up-to-date information. The ostype (LUN multiprotocol type) options and when each should be used are listed below:
Note: If you are using SnapDrive for Windows, the LUN multiprotocol type is automatically set.
hyper_v Use if you are using Windows Server 2008 or Windows Server 2012 Hyper-V and your LUNs contain virtual hard disks (VHDs). If you are using hyper_v for your LUN type, you should also use hyper_v for your igroup os type.
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Here is the source which has more info on the other igroup types also:
https://library.netapp.com/ecmdocs/ECMP1196995/html/GUID-7D4DD6E3-DB77-4671-BDA2-E393002E9EB2.html
Any help would be greatly appreciated.
~ Jason