What is the difference between LVM and RAID?

Difference in these two is the way the data is stored. # RAID is basically used for redundancy (base concept) which can be achieved by RAID 1 and RAID 5 (and some higher levels). Whereas, LVM provides more disk space at any point (i.e. you can increase the FS space by adding more disks at run time).

Does LVM use RAID?

LVM is like RAID-0, there is no redundancy. With the data striped across all four disks, there is a 7.76\% chance of one disk crashing and all data being lost. Conclusion: LVM does not have redundancy, neither does RAID-0, and backups are extremely important. Also, don’t forget to test your recovery process!

Does Windows LVM?

Windows does support a form of LVM called Storage Spaces now. It has almost identical flexibility and features.

What is a LVM partition?

LVM stands for Logical Volume Management. It is a system of managing logical volumes, or filesystems, that is much more advanced and flexible than the traditional method of partitioning a disk into one or more segments and formatting that partition with a filesystem.

How do you know if I use LVM?

3 Answers

1. If the line starts with UUID=xyz , this means it’s a physical partition.
2. If the line starst with /dev/sdaX , it also means it’s a physical partition.
3. The indicator for LVM would be something with /dev/mapper/xyz .

What is use LVM with new Ubuntu installation?

Ubuntu’s installer offers an easy “Use LVM” checkbox. The description says it enables Logical Volume Management so you can take snapshots and more easily resize your hard disk partitions — here’s how to do that. LVM is a technology that’s similar to RAID arrays or Storage Spaces on Windows in some ways.

Why do we use LVM?

Uses. LVM is used for the following purposes: Creating single logical volumes of multiple physical volumes or entire hard disks (somewhat similar to RAID 0, but more similar to JBOD), allowing for dynamic volume resizing. Performing consistent backups by taking snapshots of the logical volumes.