#VERITAS VOLUME MANAGER CONFIGURATION SOFTWARE#

When you 'snapshot' a volume, you are Saying 'I want to create a static picture of what the volume looks like right now'. Snapshotting: is used for online backups. DRL only applies to mirrored volumes, even though DRL can be added to unmirrored volumes (it just won’t do anything useful). In this way, we don’t have to worry about corrupted data. So, if a DRL log exists for the volume, it checks the log and then syncs dirty regions from the other mirror(s).

The idea here is that if the system crashes, when the system comes back online it won’t know what writes were in progress. After the note is made in the log, the write o ccurs. Before writes are made to a DRL’ed volume, VERITAS makes a note of the write in the DRL, marking that region 'dirty'. V myvol fsgen ENABLED 35356957 - ACTIVE - Pl myplex myvol ENABLED 35357021 - ACTIVE - Sd disk01-01 myplex ENABLED 176784930 - Sd disk02-01 myplex ENABLED 176784930 -ĭirty Region Logging: Also known as DRL, this feature can be thought of as a volumes diary. By providing a l ogical volume management layer, VERITAS Volume Manager overcomes the physical restriction imposed by hardware disk devices.

#VERITAS VOLUME MANAGER CONFIGURATION SOFTWARE#

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. VERITAS V olume Manager software provides easy-to- use, online storage management for enterprise computing and emerging Storage Area Network (SAN) environments.

The Product also helps ensure data integrity and high availability by offering fast failure recovery and fault tolerant features. VERITAS Volume Manager software is an adv anced, system – level disk and Storage array solution that alleviates downtime during system maintenance by enabling easy, online disk administration and configuration. In Sliced disks, the private and public regions are created in separated partitions, this makes the disk sharing more difficult between platforms, but the disks are booteable.

Veritas volume manager configuration