Viewing or resizing Windows NTFS shadow storage
This topic pertains to NetBackup for Hyper-V.
Note:
This topic applies to the VSS backup method only (not to WMI).
For the backups that are made with the Provider Type (for a block-level copy-on-write snapshot), note: Windows shadow storage for a volume on a Hyper-V host must have enough space to hold all required snapshots. If too little space is available, the backup fails with status code 42, "network read failed." In that case, a larger shadow storage area is required. Refer to Microsoft documentation for recommendations on shadow storage size.
If additional space is not available for shadow storage, reschedule backups so they do not occur at the same time.
To view or resize Windows NTFS shadow storage
- To list the current shadow storage settings, run the following on the virtual machine:
vssadmin list shadowstorage
- To resize shadow storage, run the following:
vssadmin resize shadowstorage
Refer to your Microsoft Windows documentation for more details.