Resource >> Visual LVM >> How to manage LVM with Visual LVM, from 0 to ∞ (16) - Create LV : RAID 4

How to manage LVM with Visual LVM, from 0 to ∞ (16) - Create LV : RAID 4

Section 4 : The Logical Volume operations

Author : weLees

Contents and compilations published on this website by the providers are subject to international copyright laws. Reproduction, editing, distribution as well as the use of any kind outside the scope of the copyright law require written permission of the author or weLees.

 
Section 4.1.5 Create Logical Volume - RAID 4
The RAID 4 consists of block-level striping with a dedicated parity disk. As a result of its layout, RAID 4 provides good performance of random reads, while the performance of random writes is low due to the need to write all parity data to a single disk. It consists of at least 3 storage sections.
The RAID 4
The RAID 4
 
To create RAID4 volume, you need to select at least 3 Physical Volumes which belongs to the same Volume Group, of course, the selected Physical Volume will be remove when you select a Physical Volume in other Volume Group.
select at least 3 Physical Volumes for create raid 4 volume
select at least 3 Physical Volumes for create raid 4 volume
 
the capacity of RAID 4 is (section number - 1) * section capacity
 
And you can press Advance... button to change default settings of Logical Volume.
Usually user need not to change the default advance settings of Logical Volume.
The advanced settings of RAID 4 is the same with RAID 10
Advanced settings of Logical Volume
Advanced settings of Logical Volume
 
When all settings finished, press Done button on creating Logical Volume wizard to perform operation.
After operation finished, Visual LVM shows follow dialog to inform user that Logical Volume has been created.
Logical Volume created
Logical Volume created
 
weLees we are storage expert who specialize in storage systems, provide better user experience for users, reduce your investment in non-core targets, and increase your work efficiency.