Linux LVM2
When you run the SAP HANA backup
operation, SAP HANA requests a snapshot. This
snapshot is created on a Logical Volume Management (LVM) system for each logical volume with data
for the selected database. The logical volumes are managed by LVM2 with
lvm2 commands.
A software-based LVM2 snapshot is taken as a new logical volume on the same volume group. The snapshot volumes are temporarily mounted on the same machine that runs the SAP HANA instance so that they can be transferred to the vSnap repository.
The LVM2 volume manager stores the snapshot of a logical volume within the same volume group. There must be enough space on the machine to store the logical volume. The logical volume grows in size as data changes on the source volume while the snapshot exists. Ensure that the volume group has sufficient free space for the required snapshots.