- Menu
-
- English
Views: 80 Author: Site Editor Publish Time: 2022-05-30 Origin: Site
The next layer of data recovery is a new knowledge for many IT staff, the all-flash backup layer. For most organizations, this tier is likely to be relatively small because it only needs to store enough information to recover the most recent copy of an application or data set. Not all data needs to be sent to this tier. The backup process should only store protected data in workloads that require fast recovery and production-like performance. All other data can be written directly to Tier 2 with higher capacity and lower cost, but with lower performance. In addition, the storage that makes up this tier does not need much functionality because it is designed as a temporary production system. However, the systems used for Tier 1 should have multiple redundancy points and therefore should be reliable, as they can host production workloads for a period of time until the production system is repaired or replaced.
The backup software should be smart enough to automatically replicate data from snapshots to that Tier 1 storage area, meaning IT administrators can perform backups without impacting production applications. If a storage system fails or there is a problem with physical disk capacity, IT administrators can redirect affected applications to the Tier 1 system and perform an in-place recovery. The Tier 1 system should provide the same or better performance than the primary storage system.
It is becoming less likely that an organization will need to restore backup data weeks after it is created, and the need to perform in-place recovery is becoming less likely. At the same time, organizations want to retain months or even years of data in backups to meet internal requirements and external regulatory compliance. While restoring this retained data is frequent enough, it is more practical to keep the data local than to restore all data from the cloud. Cloud storage becomes increasingly expensive over time, and many recoveries from the cloud tier can incur significant exit fees.
For this long-term retention requirement, either local network attached storage systems or object storage systems are viable candidates. Local network-attached storage (NAS) or object storage systems using high-capacity hard drives can provide organizations with cost-effective long-term storage. Backup software can manage the movement of this data to the high-capacity storage tier over time.
