Virtual TapeServer 6.03.42 Operations and Administration Guide

100 | Using Instant DR
7. In the Directory field, type the full path to the target vault (in UNIX notation). The path
must begin with the vault where the backup will be made. The remainder of the string is
specific to your environment.
8. Select the Use Secure Transfer checkbox if SSH is configured on the VTS systems and
you want to encrypt the information being transmitted. This transfer method is not
necessary if the connection between the VTS systems is secure or in a trusted
environment. The encryption process used in a secure transfer might cause some
degradation in the data transfer rate.
9. Select the All Files checkbox if you want to send all files in the job to the remote system.
If you do not select this checkbox, only the newest virtual tape (determined by the file
timestamps) is transmitted.
Note All virtual tapes within the selected group must be available to be opened and
transmitted when the job is executed.
10. Enter the information for the jobset in the vault, pool, cartridge, and target name
fields. Consider the following information when specifying these values:
•The vault, pool, and cartridge fields define the source of the backup. The target
name field specifies the name of the virtual tape on the target server.
• Specify the vault and pool names exactly as they are on your VTS system. The
cartridge (virtual tape) and target (group) names can be different. Example:
/VAULT01/LIB01
• Specify a single = in any of the fields to specify the same value as the one directly
above that value (previous line, same column). Specify == or * in the pool field to
indicate the same pool as referenced in the source entry, such as /VAULT01/==. You
can specify == for the target name, which indicates to use the same name as the
virtual tape you are synchronizing.
• Instant DR is designed to connect to remote disaster recover sites over a connection
that is much slower than the connection to your NonStop server or the local area
network. It is important to configure Instant DR in a way that maximizes your
bandwidth. It is recommended to use a wildcard for your virtual tape name, such as
ARC*. The target name is the target file name, such as ARCMASTR. Also, you can
reduce the amount of data sent over the connection to the remote site by using a
common target name for all virtual tapes in a pool. Because backup data sets change
little from day to day, only changes are sent to the remote site, thereby minimizing
bandwidth.
• Keep the following in mind regarding the target name: If a new generation of a
backup is done on consecutive days, you might rotate through a group of virtual tapes
for each backup on each day and retain previous versions online for several days. The
virtual tape you want to synchronize would be the one most recently created. Each of
these virtual tapes has been generated from the same backup task such that some of
the data remains the same from day to day, and some have changed. If the virtual
tapes involved are named ABC001, ABC002, ABC003, you can use an arbitrary group
name such as ABCABC to give to the virtual tape on the remote site.
Do this by creating three lines in the jobset. If these virtual tapes are in the same pool,
you only need to specify vault and pool once and use = for these items on the second
and third lines. On each line, specify the source virtual tape name. Specify ABCABC
for target name on the first line and then specify = on the last two lines.