Join Scott Simpson for an in-depth discussion in this video Create redundant storage with RAID, part of Linux Foundation Cert Prep: Storage Management (Ubuntu).
- [Narrator] RAID, or a redundant array…of independent disks, allows us to configure storage…in such a way that data is written to more than one disk…in an effort to increase reliability…if an underlying disk has a problem.…Some RAID configurations are also able to read…and write data faster than one individual device.…We describe various configurations of RAID arrays,…or groups of disks, using a system of numbers.…RAID 0, sometimes called RAID Level 0, or striped,…spreads one volume across two or more disks.…
While this has a benefit in terms of available space,…if one of the underlying disks experiences a problem,…it can cause complete data loss for the whole volume.…In a RAID 0 setup, the disks don't need to be the same size.…RAID 1, on the other hand, writes the same data…to more than one disk, effectively mirroring the disks.…This way, if one disk fails, there's still another copy.…With RAID 1, the disks need to be the same size.…If they're not, the resulting volume size will…only be as large as the smallest disk,…
Join instructor Scott Simpson, as he shows how to manage and optimize file storage on Ubuntu Linux. First, learn how to create, modify, and mount partitions and filesystems, and manage swap space. Scott then combines these basics into more sophisticated solutions using volume management, and shows how to secure Linux storage and configure disk quotas and backup policies.
- Creating and modifying partitions
- Creating, modifying, and mounting filesystems
- Mounting encrypted partitions
- Creating redundant storage with RAID
- Working with physical volumes, volume groups, and logical volumes
- Securing filesystems with ACLs
- Backing up data