Advantages of Veritas volume Manager
VERITAS Volume Manager provides manageability, availability, and performance enhancements for enterprise computing environments.
- Management of storage is performed online in real time, eliminating the need for planned downtime.
- You can manage all online storage from an intuitive graphical user interface.
- VxVM provides consistent management across Solaris, HP-UX, and Windows NT/2000 platforms.
- Integrity of storage is maintained by true mirroring across all write operations.
- Through RAID techniques, storage remains available in the event of hardware failure.
- Data redundancy is maintained by hot relocation, which protects against multiple simultaneous disk failures.
- Recovery time is minimized with logging and background mirror resynchronization.
- I/O throughput can be maximized by measuring and modifying volume layouts while storage remains online.
- Performance bottlenecks can be located and eliminated using VxVM analysis tools.
- VxVM runs over a 32-bit and 64-bit operating system.
- Storage can be deported to larger enterprise-class platforms.
- Storage devices can be spanned.
- VxVM is fully integrated with VERITAS File System (VxFS).
Why Use Volume Manager?
Benefits of using Volume Manager for virtual storage management include:
- Disk spanning: By using volumes and other virtual objects, Volume Manager enables you to span data over multiple physical disks. The process of logically combining physical devices to enable data to be stored across multiple devices is called spanning.
- Load balancing: Data can be spread across several disks within an array to distribute or balance I/O operations across the disks. Using parallel I/O across multiple disks improves I/O performance by increasing data transfer speed and overall throughput for the array.
- Complex multidisk configurations: Volume Manager virtual objects enable you to create complex disk configurations in multidisk systems that enhance performance and reliability. Multidisk configurations, such as striping, mirroring, and RAID configurations, can provide data redundancy, performance improvements, and high availability.
- Online administration: Volume Manager uses virtual objects to perform administrative tasks on disks without interrupting service to applications and users.
- High availability: Volume Manager includes automatic failover and recovery features that ensure continuous access to critical data. Volume Manager can automatically relocate data in case of disk failure (hot relocation) and automatically detect and use multipathed disk arrays (dynamic multipathing, or DMP).