What is a redundant backup?
Redundancy is an engineering term that means “the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the form of a backup or fail-safe, or to improve actual system performance.”
What is the difference between RAID redundancy and backup?
If you accidentally delete a file, redundancy won’t save you, since the redundant copy of the file in the RAID setup also gets deleted. The backup, though, would have that accidentally-deleted file still intact on a completely separate, independent storage medium.
What is redundant configuration?
In a redundant configuration, two CSMs perform active and standby roles. Each CSM contains the same IP, virtual server, server pool, and real server information. From the client-side and server-side networks, each CSM is configured identically. The network sees the fault-tolerant configuration as a single CSM.
What is the purpose of redundancy?
The term ”redundancy” is often confused with backup. The purpose of a redundancy is to prevent any disruption of system operation in the case of a technical failure or disaster by maintaining a continuity of service.
What is redundant storage?
Data redundancy refers to the practice of keeping data in two or more places within a database or data storage system. Data redundancy ensures an organization can provide continued operations or services in the event something happens to its data — for example, in the case of data corruption or data loss.
Is RAID better than backup?
In a battle of RAID vs. backup, both could win. While RAID offers disk failure protection, it falls short in other areas where backup comes in handy. RAID and backups are both useful — but different — tools for IT pros who protect their organization’s data.
What is redundancy and examples?
Redundancy is when we use two or more words together that mean the same thing, for example, ‘adequate enough’. We also say something is redundant when a modifier’s meaning is contained in the word it modifies, for example, ‘merge together’.
Do you really need RAID?
RAID is extremely useful if uptime and availability are important to you or your business. Backups will help insure you from a catastrophic data loss. But, restoring large amounts of data, like when you experience a drive failure, can take many hours to perform.
Should I run RAID 1?
When you want to store critical and sensitive data, RAID 1 is your best bet as it mirrors data on two disks, so even if there is a problem with the primary disk, you can always retrieve the content from the second one. In general, RAID 1 is a good choice if data redundancy is a key feature of your storage needs.