High availability ensures that network services and data are accessible at all times by configuring storage systems in high availability pairs. When a network interface fails, negotiated failover can trigger an automatic failover of the storage system to prevent loss of connectivity. Enabling negotiated failover and selecting which network interfaces to include allows the storage system to fail over to the other node. The benefits of high availability include uninterrupted data access, and the ability to perform nondisruptive upgrades to storage system components like motherboards, adapters, disks and interfaces.
1 of 14
More Related Content
SAN High availability (Netapp Storage)
1. High Availability
High availability means the amount of time the network services and data
are accessible. In many enterprises ensuring data availability at any time
and at any place is the highest priority.
13. Negotiated Failover
When a network interface fails the controller looses the connectivity no
hosts can get access the data over the failed interface to prevent the loss
of connectivity configure the NFO to trigger the HA failover of the storage
system.
To configure the NFO enable the automatic takeover by enter the
command.
>options cf.takeover_on_network_interface_failure enable
Enable the negotiated failover by executing the given command-:
Choose the e0c interface to participate in the NFO.
>ifconfig e0c nfo
>options cf.takeover.on_network_interface_failure.policy any_nic (For any NIC
)
14. Benefits of HA
Data access at anytime
Nondisruptive OS upgrade and hardware upgrade
The nondisruptive upgrade method can be used to replace or upgrade
the following components
1.The storage system
2.Motherboard
3.Adapters
4.Nonvolaile RAM(NVRAM)
5.Disks
6.Other network interface components
