![]() ![]() A sub-disk is a set of contiguous blocks that represents a specific portion of VxVM disk, which is mapped to specific region of the Disk. A VxVM Disk can be divided into one or more sub-disks.Each VxVM disk corresponds to one physical Disk.A Volume Manager Disk is created as soon as a physical disk is brought under VxVM control.You group disks into disk groups for management purpose. Disk group is a collection of VxVM disks.Volume is one of the variety of the virtual Objects. Volume Manager consists of variety of virtual objects.Volume Manager updates the VTOC, with information about the removal of the existing partition and the addition of the new partition during initialization process.Public Region consists of the remainder of the Disk.This represents the available space for VxVM to create volumes and assign data to it.Private region stores information like configuration database,kernel logs, and disk headers.Minimum size is 1024 Sectors and Maximum is 512000 Sectors ( 512k Sectors).One is Private region and second is public region. Creates two partitions on the physical disk.Volume Manager removes all the partition table entry from VTOC.What Happens to a Disk under VxVM Control You Enable Virtual data storage by bringing the disks under volume manager control.It means that volume manager creates virtual objects and establishes a logical connection between those objects and underlying physical objects. ![]() Also Called as Disk Label Partition: After VTOC, remainder of the Disks are divided ito units called Partitions Physical Storage Objects VTOC: Stores Information about Disk structure and Organization. Perform Volume Management Tasks Using GUI and CLI.Describe how physical data storage relates to virtual data storage in Veritas Volume Manager.VxVM is fully integrated with Veritas File System.Storage can be deported to large enterprise-class platforms.VxVM Runs on both 32 But and 64 Bit Operating systems.Performance bottlenecks can be eliminated using the VxVm analysis tool.I/O Throughput is maximized by measuring and modifying volumes Layouts while storage remains on-line.Recovery Time is minimized, through logging and background mirror Synchronization.Data Redundancy is maintained by hot-relocation, which protects Against multiple simultaneous disk failures.Through RAID Techniques, Storage remains available in the event of Hardware failures.Integrity of storage is maintained by true mirroring across all writes.Management of storage is performed on-line in real time, eliminating the need for downtime.Provides consistent management across all the platforms ( Solaris, HP-UX, Windows NT/2000, IBM).You can manage all storages using an intuitive graphical user interface.It protects against the Disk and Hardware failure Veritas Volume Manager is an Online Storage Management Tool that provide a logical volume management layer which overcomes the physical restrictions of disk devices by spanning volumes across the spindles.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |