What is the difference between LVM and RAID Systems?
- RAID is used for redundancy.
- A RAID device is a physical grouping of disk devices in order to create a logical presentation of one device to an Operating System for redundancy or performance or a combination of the two.
- RAID is a way to create a redundant or striped block device with redundancy using other physical block devices.
- RAID is either a software or a hardware technique to create data storage redundancy across multiple block devices based on required RAID levels.
- RAID is NOT any kind of Data backup solution. Its a solution to prevent one of the SPOFs (Single Point of Failure) i.e. DISK failure. By configuring RAID you are just providing an emergency substitute for the Primary disk. It NEVER means that you have configured DATA backup.
- LVM is a way in which you partition the hard disk logically and it contains it’s own advantages.
- LVM is a logical layer that that can be anipulated in order to create and, or expand a logical presentation of a disk device to an Operating System.
- LVM usually sits on top of RAID blocks or even standard block devices to accomplish the same result as a partitioning, however it is much more flexible than partitions. You can create multiple volumes crossing multiple physical devices, remove physical devices without loosing data, resize the volumes, create snapshots, etc
- LVM is a software tool to manage large pool of storage devices making them appear as a single manageable pool of storage resource. LVM can be used to manage a large pool of what we call Just-a-bunch-of-Disk (JBOD) presenting them as a single logical volume and thereby create various partitions for software RAID.
- LVM is a disk management approach that allows us to create, extend, reduce, delete or resize the volume groups or logical volumes.
- Google Maps shows “For development purposes only”Google Maps show the message “For development purposes only” when I try to show it in my web page The post Google Maps shows “For development purposes only” appeared first on Aviance School.
- how to fix “this page didn’t load google maps correctly” errorhow to fix “this page didn’t load google maps correctly” error The post how to fix “this page didn’t load google maps correctly” error appeared first on Aviance School.
- Failed to connect to MySQL: “No route to host”I got an error like Failed to connect to MySQL “No route to host”.How do I resolve the issue.My website ... The post Failed to connect to MySQL: “No route to host” appeared first on Aviance School.
- How to add a target _blank on a WordPress menu item or other elements?I want to add a target attribute of a link on the top menu from wordpress backend. The post How to add a target _blank on a WordPress menu item or other elements? appeared first on Aviance School.
- How to import products in MagentoI want to upload Products to Magento with a CSV file The post How to import products in Magento appeared first on Aviance School.