How to manage LVM with Visual LVM, from 0 to ∞ (16) - Create LV : RAID 4
Section 4 : The Logical Volume operations
Author : weLees
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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
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
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
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
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