Backing up qtree data

Initiating the first backup of data from primary storage systems

To specify the qtrees that you want to be backed up and to run a first-time (complete) SnapVault transfer, complete the following step.

Step	Action
1	At the console for the secondary storage system, enter the following command: snapvault start -S prim_system:prim_qtree_path sec_host:sec_qtree_path `-S` prim_system:prim_qtree_path specifies the qtree on the primary storage system to be backed up. This option must be set the first time the command is run for each primary storage system qtree you want to copy. sec_host is the name of the destination (secondary storage system) to which the data from the primary system qtree is transferred. If no secondary storage system is specified, the local host's name is used. sec_qtree_path is the path to and the name of the qtree on the secondary storage system. Note The qtree specified for sec_qtree_name must not exist on the secondary system before you run the `snapvault start` command. For information about `snapvault start` command options, see the na_snapvault(1) man page.

Step

Action

At the console for the secondary storage system, enter the following command:

snapvault start -S prim_system:prim_qtree_path 
sec_host:sec_qtree_path

-S prim_system:prim_qtree_path specifies the qtree on the primary storage system to be backed up. This option must be set the first time the command is run for each primary storage system qtree you want to copy.

sec_host is the name of the destination (secondary storage system) to which the data from the primary system qtree is transferred. If no secondary storage system is specified, the local host's name is used.

sec_qtree_path is the path to and the name of the qtree on the secondary storage system.

Note
The qtree specified for sec_qtree_name must not exist on the secondary system before you run the snapvault start command.

For information about snapvault start command options, see the na_snapvault(1) man page.

Example:

systemB> snapvault start -S systemA:/vol/vol2/qtree3 
/vol/vol1/qtree3

Result:

SnapVault creates a Snapshot copy of qtree3 in vol2 of the primary storage system (systemA), copies the data in it to the secondary storage system (systemB) at vol/vol1/qtree3, and configures the qtree for future updates.

Note
The time required for this baseline transfer is limited by the total amount of primary data to be backed up and by the inode count. SnapVault can carry out initial backup at an approximate rate of 7 million inodes per hour (110,000 inodes per minute). In the first phase of a large transfer, SnapVault creates inodes, and it may appear that no activity is taking place.