Hello,   There is no issue with doing either on the EQL side at all.   The SAN does not have any impact on this configuration.    In older WIndows OS's,  dynamic disks would not start back up properly when using the MS software iSCSI initiator.  It was a dependency problem in the OS.  When the OS went to activate spanned, mirrored or striped volumes, the SW iSCSI initiator hadn't run yet.     Given your data needs have you also considered using mount points instead of spanned/striped?     D:\Data  --> 15TB volume  D:\ Data\Archive --> 2nd 15TB volume   D:\Data\Backup --> 3rd 15TB volume   It's a very common practice.  It also greatly eases the migration.  If you did spanned/striped you'd have to either create new volumes and migrate or backup / restore if you don't have enough space.   Here's some info on how to use mount points.  [URL]   Regards,  Don 
I am kind of stuck between a rock and a hard place. I have a Windows 2012 server with a volume that is almost full at 15TB. The data in the volume is thousands of individual folders with millions of small image files. I was thinking of using either Windows Spanned Volume or a Windows Striped Volume to circumvent the EqualLogic 15TB limit. I know this is not recommended procedure, but can anyone tell me if there are some inherent issues with EqualLogic and using one of these methods or which method is the lesser of the two evils?    
EqualLogic 15TB LUN limit