Shulou(Shulou.com)06/01 Report--

In IT products, both hardware and software will take into account the availability and reliability of the product itself when designing. Because no matter how good the product is, if it loses its usability and reliability, it seems difficult to satisfy the end user. For example, although the "miserable" Windows Vista is more reliable, it loses its usability (because most users think it is not easy to use, personally, it is OK), so the Windows Vista is destined to become a transitional product of Windows 7. As an enterprise-class data center, the high availability and high reliability are much stricter. It is generally said that the availability and reliability of hardware and software are up to 99.9%.

Traditional data centers use methods such as network, disk redundancy, server cluster, system NTBACKUP, and third-party backup tools to back up core business application data and systems.

Today, as virtualization, the evolution of the data center. Virtual computing still has no change in availability and reliability, because the goal is how to provide an efficient, secure and stable platform to support enterprise business application platform, whether in traditional environment or virtual environment. The following is the most mature and dominant VMware vSphere product in the market to find out what backup and recovery methods we have to choose from in virtual computing:

Simple method:

1. Import and export of virtual machine (the process of virtual machine to disk)

2. Virtual machine snapshot (save the virtual machine state of a specific time slice)

Centralized backup mode:

1 、 VMware Consolidated Backup

Function: centralized backup for virtual machines and integration with third-party backup software.

Difficulty of operation: simple

Recommendation: if the enterprise already has a centralized backup product

Such as: Computer Associates\ CommVault\ EMC\ HP\ Symantec\ Tivoli\ Vizoncroe... .

Advantages: 1. Reduce VMware ESX load

2. Perfect combination with enterprise backup products

3. Support full and incremental backup and recovery of virtual machines

4. Avoid generating a large number of data streams during backup

2. VMware Data Recovery function: a backup and recovery method based on disk level, and fully integrated with vCenter Server.

Difficulty of operation: simple

Suitable scope: single data center, single vCenter.

Recommendation: completely other virtual machine backup solutions, do not require third-party software support, and seamlessly integrate with vCenter. It is better to have the advantages of vSphere4.0 platform: 1, can backup (run, shut down, migrate) any state virtual machine 2, based on snapshot backup (no agent) method, improve RTO. 3. Deduplication technology to reduce backup costs. 4. Support full, incremental backup and recovery of virtual machines

VMware Site Recovery

Features: VMware vCenter Site Recovery Manager provides advanced features for disaster recovery management, non-disruptive testing, and automated failover. VMware vCenter Site Recovery Manager can manage failover from the production data center to the disaster recovery site, as well as between two sites with active workloads. You can even restore multiple sites to a shared recovery site. Site Recovery Manager can also help with planned failover of the data center, such as data center migration. Operation difficulty: there is a certain degree of difficulty suitable for: double or multiple data center synchronization, disaster recovery, but need backend storage support. Recommendation: there are users who need remote backup and recovery of data centers (finance, insurance, government, military industry … ) advantages: 1, perfect integration with vCenter 2, efficient use of storage-level replication advantages 3, multiple sites can be obtained as a shared recovery site 4, automated recovery plan testing

The above three levels are aimed at the backup and recovery scheme of VMware vSphere. If you want to achieve the best results, I think it will be a nested process and be used flexibly in the backup process to achieve the backup scheme that is most suitable for the enterprise.

Of course, there are many third-party backup tools on the market to back up virtual machines based on vSphere platforms, such as PHD Virtual,Veeam.

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