Fibre Transport properties
NetBackup Fibre Transport properties control how your Fibre Transport media servers and SAN clients use the Fibre Transport service for backups and restores. The Fibre Transport properties apply to the host type that you select in the NetBackup Administration Console, as follows:
Table: Host types for Fibre Transport properties
Host type | Description |
|---|
Master server | Global Fibre Transport properties that apply to all SAN clients. |
Media server | The Fibre Transport Maximum concurrent FT connections property applies to the FT media server or servers that you selected in the NetBackup Administration Console. |
Client | The Fibre Transport properties apply to the SAN client or clients that you selected in the NetBackup Administration Console. The default values for clients are the global property settings of the master server. Client properties override the global Fibre Transport properties. |
Table: Fibre Transport dialog box properties describes the properties. All properties are not available for all hosts. In this table, FT device is an HBA port on a Fibre Transport media server. The port carries the backup and restore traffic. A media server may have more than one FT device.
Table: Fibre Transport dialog box properties
Property | Description |
|---|
Maximum concurrent FT connections | This property appears only when you select an FT media server or servers in the NetBackup Administration Console. This property specifies the number of FT connections to allow to the selected media server or media servers. A connection is equivalent to a job. If no value is set, NetBackup uses the following defaults: For NetBackup Appliance model 5330 and later: 32 For NetBackup Appliance model 5230 and later: 32 For NetBackup Fibre Transport media servers: 8 times the number of fast HBA ports on the media server plus 4 times the number of slow HBA ports. A fast port is 8 GB or faster, and a slow port is less than 8 GB.
You can enter up to the following maximum connections for the media server or servers to use: On a Linux FT media server host: 40. Veritas recommends that you use 32 or fewer connections concurrently on Linux. On Linux hosts, you can increase that maximum by setting a NetBackup touch file, NUMBER_DATA_BUFFERS_FT. See About Linux concurrent FT connections. For NetBackup Appliance model 5330 and later: 40. For NetBackup Appliance model 5230 and later: 40. On a Solaris FT media server host: 64.
NetBackup supports 644 buffers per media server for Fibre Transport. To determine the number of buffers that each connection uses, divide 644 by the value you enter. More buffers per connection equal better performance for each connection. |
Use defaults from the master server configuration | This property appears only when you select a client or client in the NetBackup Administration Console. This property specifies that the client follow the properties as they are configured on the master server. |
Preferred | The Preferred property specifies to use an FT device if one is available within the configured wait period in minutes. If an FT device is not available after the wait period elapses, NetBackup uses a LAN connection for the operation. If you select this option, also specify the wait period for backups and for restores. For the global property that is specified on the master server, the default is . |
Always | The Always property specifies that NetBackup should always use an FT device for backups and restores of SAN clients. NetBackup waits until an FT device is available before it begins the operation. However, an FT device must be online and up. If not, NetBackup uses the LAN. An FT device may be unavailable because none are active, none have been configured, or the SAN Client license expired. |
Fail | The Fail property specifies that NetBackup should fail the job if an FT device is not online and up. If the FT devices are online but busy, NetBackup waits until a device is available and assigns the next job to the device. An FT device may be unavailable because none are active, none have been configured, or the SAN Client license expired. |
Never | The Never property specifies that NetBackup should never use an FT pipe for backups and restores of SAN clients. NetBackup uses a LAN connection for the backups and restores. If you specify for the master server, Fibre Transport is disabled in the NetBackup environment. If you select , you can configure FT usage on a per-client basis. If you specify for a media server, Fibre Transport is disabled for the media server. If you specify for a SAN client, Fibre Transport is disabled for the client. |
NetBackup provides one finer level of granularity for Fibre Transport. SAN client usage preferences override the FT properties that you configure through Host Properties.
For more information about NetBackup Fibre Transport, see the NetBackup SAN Client and Fibre Transport Guide:
http://www.veritas.com/docs/DOC5332
