Hey,  You can easily to understand the issue.  Storage servers are tied to a specific storage processor (SP). Based on the storage server you select, a list of available storage pools appears. When space is allocated for storage resources on specific storage servers, additional space gets reserved which can then be only used by the storage servers on that SP. The available space displayed in the list of storage pools is the space generally available to the storage servers on either storage processor (unreserved space) and any available space that is reserved for the storage server's SP. This is why you may notice that the free space in a storage pool is different for storage servers on SPA and SPB.   Hope this helps. [IMAGE]
My VNXe 3100 is setup with one large storage pool of 10 disks  I have ISCSI servers on SPA and SPB. There is 300 gig of free space but when I try to extend a LUN on each server I get   10 Gig available on ISCSI server A 290 Gig available on ISCSI server B  Why is this ? Why can the space not be equally claimed by either ISCSI server/SP ?  There is no protection configured. Is there some kind of reserve setting somewhere ?
VNXe 3100 Free Space not available to all LUNS