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SAN/iQ 9 Problems reporting consumed space

Ovidiu Marangoci
Occasional Contributor

SAN/iQ 9 Problems reporting consumed space

Our customer has HP Lefthand P4300 G2 nodes with SAN/IQ 9, some nodes were purchased with this version, other were upgraded from 8.5. Now all the nodes have the latest versions of firmware. The host servers are running VMWare ESXi 4.1.
The biggest problem is when the CMC reports consumend space for volumes, for example, we have a volume 2 way replicated, thin provisioned max dimension 640 GB, consumed space: 1 TB (this is almost true because the volume has around 480 GB of data, this is what ESXi shows). When the customer changed the the volume from thin provision to thick provision, the cosumend space started to show 2,2 TB witch is terribly wrong because the volume is 2-way replicated.
This situation didn't occour just to this volume, first the customer dicovered this when he tried to make a large volume of 1,6 TB from thin to thick and the CMC told him that it doesn't have enough space, witch it was not true.
The customer uses 3 nodes clusters and the volumes that had this issues also are remotely replicated using scheduled remote snapshot. The snapshot isn't larger then max, 5 GB, this can be seen from the time it takes to finish the transfer to the remote location.