Veritas NetBackup™ Flex Scale Administrator's Guide
- Product overview
- Viewing information about the NetBackup Flex Scale cluster environment
- NetBackup Flex Scale infrastructure management
- User management
- Directory services and certificate management
- Region settings management
- About NetBackup Flex Scale storage
- About Universal Shares
- Creating a Protection Point for a Universal Share
- Node and disk management
- License management
- NetBackup Flex Scale network management
- About network management
- Modifying DNS settings
- About bonding Ethernet interfaces
- Bonding operations
- Data network configurations
- NetBackup Flex Scale infrastructure monitoring
- Resiliency in NetBackup Flex Scale
- EMS server configuration
- Site-based disaster recovery in NetBackup Flex Scale
- About site-based disaster recovery in NetBackup Flex Scale
- Configuring disaster recovery using GUI
- Clearing the host cache
- Managing disaster recovery using GUI
- Performing disaster recovery using RESTful APIs
- Active-Active disaster recovery configuration
- NetBackup optimized duplication using Storage Lifecycle Policies
- NetBackup Flex Scale security
- Troubleshooting
- Services management
- Collecting logs for cluster nodes
- Checking and repairing storage
- Troubleshooting NetBackup Flex Scale issues
- If cluster configuration fails (for example because an IP address that was already in use is specified) and you try to reconfigure the cluster, the UI displays an error but the configuration process continues to run
- Validation error while adding VMware credentials to NetBackup
- NetBackup Web UI incorrectly displays some NetBackup Flex Scale processes as failed
- Unable to create BMR Shared Resource Tree (SRT) on NetBackup Flex Scale Appliance
- NetBackup configuration files are not persistent across operations that require restarting the system
- Appendix A. Configuring NetBackup optimized duplication
- Appendix B. Disaster recovery terminologies
- Appendix C. Configuring Auto Image Replication
About bonding Ethernet interfaces
Bonding associates a set of two or more Ethernet interfaces with one IP address. The association improves network performance on each NetBackup Flex Scale cluster node by increasing the potential bandwidth available on an IP address beyond the limits of a single Ethernet interface. Bonding also provides redundancy for higher availability.
For example, you can bond two 1 gigabit Ethernet interfaces together to provide up to 2 gigabits per second of throughput to a single IP address. Moreover, if one of the interfaces fails, communication continues using the single Ethernet interface.
When you create a bond, you need to specify a bonding mode. In addition, for the following bonding modes: 802.3ad, active-backup, balance-rr, balance-xor, broadcast, balance-tlb, and balance-alb, make sure that the base network interface driver is configured correctly for the bond type. For type 802.3ad, the switch must be configured for link aggregation.
The 802.3ad and balance-xor bond types have an option of sub-types, layer2 and layer(3+4).
Consult your vendor-specific documentation for port aggregation and switch set-up. You can use the -s option in the Linux ethtool command to check if the base driver supports the link speed retrieval option. The balance-alb bond mode type works only if the underlying interface network driver enables you to set a link address.
Note:
An added IPv6 address may go into a TENTATIVE state while bonding Ethernet interfaces with balance-rr, balance-xor, or broadcast bond modes. While bonding with those modes, NetBackup Flex Scale requires the switch to balance incoming traffic across the ports, and not deliver looped back packets or duplicates. To work around this issue, enable EtherChannel on your switch, or avoid using these bond modes.
Table: Bonding mode
Index | Bonding mode | Fault tolerance | Load balancing | Switch setup | Ethtool/base driver support |
|---|---|---|---|---|---|
1 | balance-rr | Yes | Yes | Yes | No |
2 | active-backup | Yes | No | No | No |
3 | balance-xor | Yes | Yes | Yes | No |
4 | broadcast | Yes | No | Yes | No |
5 | 802.3ad | Yes | Yes | Yes | Yes (to retrieve speed) |
6 | balance-tlb | Yes | Yes | No | Yes (to retrieve speed) |
7 | balance-alb | Yes | Yes | No | Yes (to retrieve speed) |
Note:
When you create or remove a bond, SSH connections with Ethernet interfaces involved in that bond may be dropped. When the operation is complete, you must restore the SSH connections to continue administering the appliance.