Veritas Access Appliance Administrator's Guide
- Section I. Introducing Access Appliance
- Section II. Configuring Access Appliance
- Managing users
- Configuring the network
- Configuring authentication services
- Configuring user authentication using digital certificates or smart cards
- Section III. Managing Access Appliance storage
- Configuring storage
- Managing disks
- Access Appliance as an iSCSI target
- Configuring storage
- Section IV. Managing Access Appliance file access services
- Configuring the NFS server
- Setting up Kerberos authentication for NFS clients
- Using Access Appliance as a CIFS server
- About configuring CIFS for Active Directory (AD) domain mode
- About setting trusted domains
- About managing home directories
- About CIFS clustering modes
- About migrating CIFS shares and home directories
- About managing local users and groups
- Using Access Appliance as an Object Store server
- Configuring the NFS server
- Section V. Managing Access Appliance security
- Section VI. Monitoring and troubleshooting
- Configuring event notifications and audit logs
- About alert management
- Appliance log files
- Configuring event notifications and audit logs
- Section VII. Provisioning and managing Access Appliance file systems
- Creating and maintaining file systems
- Considerations for creating a file system
- About managing application I/O workloads using maximum IOPS settings
- Modifying a file system
- Managing a file system
- Creating and maintaining file systems
- Section VIII. Provisioning and managing Access Appliance shares
- Creating shares for applications
- Creating and maintaining NFS shares
- About the NFS shares
- Creating and maintaining CIFS shares
- About the CIFS shares
- About managing CIFS shares for Enterprise Vault
- Integrating Access Appliance with Data Insight
- Section IX. Managing Access Appliance storage services
- Configuring episodic replication
- Episodic replication job failover and failback
- Configuring continuous replication
- How Access Appliance continuous replication works
- Continuous replication failover and failback
- Using snapshots
- Using instant rollbacks
- Configuring episodic replication
- Section X. Reference
About Access Appliance episodic replication
The Access Appliance episodic replication solution provides high performance, scalable data replication and is ideal for use as a content distribution solution, and for use to create hot standby copies of important data sets.
Access Appliance episodic replication lets you asynchronously replicate a file system from one node in a source cluster to another node in a destination cluster at regularly timed intervals. This allows for content sharing, replication, and distribution.
The Access Appliance episodic replication functionality allows episodic replication with a minimum timed interval update of 15 minutes and no set maximum. Unlike many replication solutions, Access Appliance episodic replication also allows the destination file system to be online for reads while replication is active.
Major features of Access Appliance episodic replication include:
Online access (read-only) to replicated data.
Immediate read/write access to destination-replicated data in the unlikely event that the source file system goes offline for a sustained period of time.
Load balancing across replication links.
Transport failover of episodic replication service from one node to another.
No limit on the number of episodic replication jobs that are configured, though the number of simultaneous/parallel jobs that can run at any time depends on the amount of memory available.
The Access Appliance episodic replication feature is designed to copy file systems only between Access Appliance clusters.
Note:
The Access Appliance episodic replication feature does not support user modifications to the target file system if episodic replication is configured.
Figure: Episodic replication workflow describes the workflow for configuring episodic replication between two Access Appliance clusters.