Performance problem with VCB 1.5 - Fragmentation to temporary disk

We use VCB 1.5, VMware 3.5 and TSM .

We did some test with parallel VCB backup, 4 VCB backup task simultaneously and we use image level backup.

Each backup process would chain 1 - a vcbmounter fullvm copy on the VCB Proxy drive; 2 - a backup of this copy on our SAN attached tape library

But the for 4 task generate fragmented backup file on the temporary disk, this facts is slowing down the TSM backup process. Is big problem for us we have 100 VM to backing up.

Is there anyone see this fact?

Is there anyone know a solution for this

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