VERITAS Volume Manager software is an advanced, system-level disk and storage array solution that alleviates downtime during system maintenance by enabling easy, online disk administration and configuration. The product also helps ensure data integrity and high availability by offering fast failure recovery and fault tolerant features. VERITAS Volume Manager software provides easy-to-use, online storage management for enterprise computing and emerging Storage Area Network (SAN) environments. Through the support of RAID redundancy techniques, VERITAS Volume Manager software helps protect against disk and hardware failures, while providing the flexibility to extend the capabilities of existing hardware. By providing a logical volume management layer, VERITAS Volume Manager overcomes the physical restriction imposed by hardware disk devices.
So, there you have it. But let me briefly list some of the things they totally missed.
•Support for: Simple, RAID0, RAID1, RAID0+1, RAID1+0, RAID5
•Dynamic Multipathing (DMP): Load balancing and redundant I/O paths to disk arrays supporting multi-controller attachment.
•Online Relayout: VERITAS allows you to change the layout of a VERITAS volume while it is live and mounted. Change a RAID0 to a RAID5 without a second of downtime!
•Snapshoting: Take a snapshot of your data, creating a "shadow" of it which you can use for online backups.
•Hot Relocation: Designate "spares" which will take the place of failed disks on-the-fly.
•Dirty Region Logging (DRL): Volume transaction logs which provide fast recoveries after system crashes.
•More...... more than I can list!
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