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
Choosing a file system layout type
Access Appliance allows you to create file systems with several layout types. The following table describes the layout types and their advantages.
Table: Types of volume layout
Layout type | Description |
---|---|
Simple | Arranges the disks sequentially and contiguously. A simple layout allows a file system to be created from multiple regions of one or more disks if there is not enough space on a single region of a disk. |
Striped | Spreads the data evenly across multiple disks. Stripes are equal-sized fragments that are allocated alternately and evenly to the disks. Throughput increases with the number of disks across which a file system is striped. Striping helps to balance I/O load in cases where high traffic areas exist on certain disks. |
Mirrored | Mirrors the information contained in the file system to provide redundancy of data. For the redundancy to be useful, each mirror should contain disk space from different disks. |
Mirrored-stripe | Configures a striped file system and then mirrors it. This requires at least two disks for striping and one or more other disks for mirroring (depending on whether the mirror is simple or striped). The advantages of this layout are increased performance by spreading data across multiple disks and redundancy of data. |
Striped-mirror |
Configures several mirrors as the columns of a striped file system. This layout offers the same benefits as a mirrored-stripe file system. In addition, it provides faster recovery as the failure of single disk does not force an entire striped mirror offline. |