Lee, The VMWare documentation is a bit confusing, but it appears that while NFS datastores may support CBT, they don't support it fully. Any backup software that leverages the VMWare APIs for backup will have the same issue as TSM for VE when backup is initiated on a VM that's stored on a NFS datastore. In order to perform incremental-style backups on VMs stored on an NFS datastore, you'd need something like VEEAM, which has its own changed-block-tracking mechanism and doesn't leverage the VMWare API for that purpose.
__________________________ Matthew McGeary Technical Specialist - Operations PotashCorp T: (306) 933-8921 www.potashcorp.com From: "Lee, Gary" <g...@bsu.edu> To: ADSM-L@VM.MARIST.EDU Date: 01/15/2015 08:14 AM Subject: [ADSM-L] tsm for ve, nfs datastores and cbt Sent by: "ADSM: Dist Stor Manager" <ADSM-L@VM.MARIST.EDU> We are running vmware 5.1, using tsm for ve 6.4.2, and using nfs data stores. It appears that change block tracking does not work with tsm for ve on nfs data stores. This is forcing full backups every night. Our environment is currently over 14 tB and growing. With this limitation, we will not be able to continue using tsm for ve. Have any on the list encountered this situation, and if so, have you found a work around? Further information is here. http://www-01.ibm.com/support/docview.wss?uid=swg21681916
