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Veritas volume manager software
Veritas volume manager software




veritas volume manager software

Volume Manager objects can be manipulated in a variety of ways to optimize performance, provide redundancy of data, and perform backups or other administrative tasks on one or more physical disks without interrupting applications. Also, stripes and concatenations are normally achieved during the creation of the plex. Plex Configuration A number of plexes (usually two) are associated with a volume to form a working mirror. Volumes are created within a disk group a given volume must be configured from disks belonging to the same disk group. The use of two or more plexes forms a functional mirror.Ī virtual disk device that appears to be a physical disk partition to applications, databases, and file systems, but does not have the physical limitations of a physical disk partition. Often referred to as mirrors a plex consists of one or more subdisks located on one or more disks, forming one side of a mirror configuration. A VM disk can be divided into one or more subdisks. Disk groups allow the administrator to group disks into logical collections for administrative convenience.Ī set of contiguous disk blocks subdisks are the basic units in which the Volume Manager allocates disk space. Additional disk groups can be created, as necessary. The default disk group used to be rootdg (the root disk group) in versions prior to version 4, but there is now no default disk group assigned. A VM disk usually refers to a physical disk in the array.Ī collection of VM disks that share a common configuration. Each VM disk corresponds to at least one partition. There are several Volume Manager objects that the Volume Manager uses to perform disk management tasks (see Table 10.9).Ī contiguous area of disk space from which the Volume Manager allocates storage. Volumes and their virtual components are referred to as Volume Manager objects. Volumes are accessed by the Solaris file system, a database, or other applications in the same way physical disk partitions would be accessed. The physical disk, as explained in Chapter 1, can be divided into one or more slices. A physical disk can be accessed using a device name such as /dev/rdsk/c # t # d. A physical disk is the underlying storage device (media), which may or may not be under Volume Manager control. The Volume Manager builds virtual devices called volumes on top of physical disks. This chapter will, however, introduce you to the Veritas Volume Manager and some of the terms you will find useful. Veritas Volume Manager is a complex product that would take much more than this chapter to describe in detail. SVM is now a much more robust product but the difference is negligible. It used to be much more robust than the older Solstice DiskSuite productthe predecessor to the Solaris Volume Manager, providing tools that identify and analyze storage access patterns so that I/O loads can be balanced across complex disk configurations. Although Veritas Volume Manager also provides the capability to mirror the OS drive, in actual industry practice, you'll still see SVM used to mirror the OS drive, even on large Sun servers that use Veritas Volume Manager to manage the remaining data. It is widely used for performing Virtual Volume Management functions on large scale systems such as Sun, Sequent, and HP. This product has traditionally been used for managing Sun's larger StorEdge disk arrays.

#VERITAS VOLUME MANAGER SOFTWARE SOFTWARE#

Veritas Volume Manager is an unbundled software package that can be purchased separately via Sun, or direct from Veritas, and does not come as part of the standard Solaris 10 release.

veritas volume manager software

A course is run by Sun Microsystems for administrators using Veritas Volume Manager. This section has been included solely to provide some additional information for system administrators and to allow comparison between this product and the Solaris Volume Manager.

veritas volume manager software

Veritas Volume Manager There are no questions on the Veritas Volume Manager in the exam.






Veritas volume manager software