If you are configuring the environment described in the title:
"Non-staged VMware GRE smartcache devices based on Storeonce NFS/SMB network storage."
And in the middle of your backups to these devices, you experience disconnections or poor performance. Please check this Customer notice:
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c03924510&sp4ts.oid=5196525
There were some problems both in CIFS and NFS causing disconnections and poor performance that should have been resolved with the latest Storeonce firmware:
CIFS shares periodically losing connection
CIFS share failed due to Cannot write to device [64] The specified network name is no longer available
Unable to manage CIFS share permissions on appliances that are members of an Active Directory domain
Poor performance of backups to CIFS shares with Veeam software
NFS shares fail to start
NFS performance improvements
NFS Share created as write-protected cannot be changed to non-write protected
If you have already installed the latest firmware and the issue persists, please contact StoreOnce support to ensure they provide you with the right fixes for these known issues.
Regards
Juanjo