What is Varyonvg?
Description. The varyonvg command activates the volume group specified by the volumegroup parameter and all associated logical volumes. A volume group that is activated is available for use. When a volume group is activated, physical partitions are synchronized if they are not current.
What is quorum AIX?
A quorum is a vote of the number of Volume Group Descriptor Areas and Volume Group Status Areas (VGDA/VGSA) that are active. A quorum ensures data integrity of the VGDA/VGSA areas in the event of a disk failure. Each physical disk in a volume group has at least one VGDA/VGSA.
What is VG in AIX?
VOLUME GROUP It is called the rootvg. Your rootvg volume group is a base set of logical volumes required to start the system. It includes paging space, the journal log, boot data, and dump storage, each on its own separate logical volume. A normal VG is limited to 32512 physical partitions. (
What is LVM in AIX?
LVM is a generalized approach to managing storage that is not specific to any operating system. All UNIX-like operating systems typically offer an LVM option; in AIX an LVM-based approach is the only way to manage storage. So understanding how AIX implements LVM is necessary for the AIX administrator.
What is VGSA in AIX?
VGSA (Volume Group Status Area) The VGSA contains state information about physical partitions and physical volumes. For example, the VGSA knows if one physical volume in a volume group is unavailable and the state of all physical partitions in the volume group.
What is T factor in AIX?
Using the “t-factor” The downside of using the t-factor is it divides the maximum number of PVs that can be put in to a volume group. For example, a t-factor of 2 applied to a regular volume group would allow the admin to add a disk that creates 2032 PPs (2 x 1016) on each PV.
What is AIX platform?
AIX is an open operating system from IBM that is based on a version of UNIX. AIX/ESA was designed for IBM’s System/390 or large server hardware platform. AIX/6000 is an operating system that runs on IBM’s workstation platform, the RISC System/6000.
What is LP and PP in AIX?
AIX adds a further element to the LVM structure, the logical partition (LP). This allows for the implementation of simple mirroring (i.e., RAID1 redundancy) within the LVM. In the illustration above we can see three LVs. The blue LV contains three LPs, each of which is assigned a PP on a different PV.
How do you make VG bigger in AIX?
Creating a Volume Group
- Create a Volume Group.
- Create a Logical Volume within the VG containing a JFS2 filesystem that will be automatically mounted during boot.
- Add a disk to the VG and mirror the data across 2 disks.
- Display LP>PP mappig and LVCB.
Is AIX a mainframe?
The first version of AIX was launched in 1986. The latest stable version of AIX is 7.2….Difference between Linux and AIX.
| LINUX | AIX |
|---|---|
| Its target system types are embedded systems, mobile devices, personal computers, servers, mainframe computers and supercomputers. | Its target system types are Server, NAS and workstation. |
Is AIX and UNIX same?
IBM’s Advanced Interactive eXecutive, or AIX, is a series of proprietary UNIX-based operating systems built and sold by IBM. AIX is the leading open standards-based UNIX operating system providing secure, scalable, and robust infrastructure solutions for enterprise.
What is scalable VG in AIX?
AIX 5L Version 5.3 has introduced a new VG type called scalable volume group (scalable VG). A scalable VG allows a maximum of 1024 PVs and 4096 LVs. The maximum number of PPs applies to the entire VG and is no longer defined on a per disk basis.