About media server requirements for OpenStorage direct to tape

Although NetBackup media servers do not provide I/O, they are used to manage the operations.

Table: Media server requirements for OpenStorage direct to tape

Media server function	Description
Read side media server	In this context, the read side media server does not read or move the backup images. It manages the read side of the NDMP copy operation. The read side media server requires the following: The NetBackup for NDMP software. Logon credentials for the disk appliance storage server and the NDMP FSE host. If the NDMP FSE host and the storage server host have the same name, NetBackup uses the storage server credentials to logon to the NDMP host. Therefore, you do not have to configure NDMP credentials in NetBackup. This NetBackup behavior means that the credentials you create for the disk appliance storage server and the NDMP FSE host must be the same. If the NDMP FSE hostname is different than the storage server hostname, you must configure logon credentials in NetBackup for that NDMP host.
Write side media server	In this context, the write side media server does not move or write the backup images. It manages the write side of the NDMP copy operation. The write side media server requires the following: The NetBackup for NDMP software. Logon credentials for the NDMP tape server host.

Media server function

Description

Read side media server

In this context, the read side media server does not read or move the backup images. It manages the read side of the NDMP copy operation.

The read side media server requires the following:

The NetBackup for NDMP software.
Logon credentials for the disk appliance storage server and the NDMP FSE host.
If the NDMP FSE host and the storage server host have the same name, NetBackup uses the storage server credentials to logon to the NDMP host. Therefore, you do not have to configure NDMP credentials in NetBackup. This NetBackup behavior means that the credentials you create for the disk appliance storage server and the NDMP FSE host must be the same.
If the NDMP FSE hostname is different than the storage server hostname, you must configure logon credentials in NetBackup for that NDMP host.

Write side media server

In this context, the write side media server does not move or write the backup images. It manages the write side of the NDMP copy operation.

The write side media server requires the following:

If one host provides both NDMP FSE and NDMP tape server functionality, one media server functions as both the read and write server.