Sepaton Disaster Tolerance Solution

Disaster tolerance refers to the guarantee that the information system can provide normal application service after various disaster damage, and can be divided into data disaster tolerance and application disaster tolerance. Data disaster tolerance is the base of disaster tolerant system, and it is also the last means to protect the data when calamity occurs.

Shanghai Insurance Company has established a complete data backup mechanism, but the backup data are stored in the local data center, once the fire or other natural disaster data security can not be effectively protected. So users want to copy the backup data to the remote Data center in Beijing, so as to achieve disaster tolerance, hope disaster recovery system can ensure that the disaster occurred within 1 days after the normal operation of the business, and the loss of data control within 4 hours. The implementation of disaster-tolerant system can best utilize existing IP network and have flexible policy driving mechanism.

There are many ways to implement data remote replication, with disk-based storage, tape-based media, and switch based. Based on the above requirements of users, and taking full advantage of the user's existing backup environment, to save investment costs for users, we recommend the use of the United States Sepaton Company's S2100 ES2 Virtual Tape Library (hereinafter referred to as VTL) plus Site2? A scenario for remote tape replication technology. First, users can improve the efficiency of the entire backup system by using the S2100 ES2 VTL in the backup system, and Site2? Remote tape replication technology supports a variety of network transmission methods, can make full use of the existing IP dedicated line network; and Site2? Support Command triggering and policy driven, enabling users to establish flexible remote data replication mechanisms; Finally, in the event of a disaster, the S2100 ES2 VTL's powerful recovery performance guarantees that the business will be restored within the time the user wants.

In this scheme, we replace the STK mechanical tape Library of the user's local data center with S2100 ES2 VTL, and cooperate with the user's original Veritas NBU software to make the data backup, which makes the backup performance of the whole backup system and the working time without fault get a significant improvement. Install Site2 on S2100 ES2 VTL at the same time? Remote tape replication software. Beijing Data Center as a remote disaster-tolerant site, the same configuration of a S2100 ES2 VTL and install Site2? Software. The virtual tape transfer between the local site and the remote site is achieved through the user's original IP dedicated network connection between the two data centers. The schematic diagram is as follows:

With such a design, a disaster in the user's local center results in the loss of data from the Beijing disaster-tolerant site to obtain the required data and restart the local business through remote recovery. Of course, in order to get better RTO metrics, users also have a standby server in the Beijing center that runs the same application as the local center, is normally used for ancillary services, and can be restored to the Beijing central server in place in the event of a disaster, Faster recovery of business operations--this has actually gone beyond the concept of data disaster tolerance, and achieved the application level of heat-temperature mode of disaster tolerance. Similarly, the Beijing Center's data are transmitted remotely to the Shanghai center, creating a disaster-tolerant model in which any catastrophe can be temporarily taken over by another site. The specific implementation process is as follows:

1 First, in Shanghai Local data center with SEPATON S2100 ES2 vtl Replace the original STK mechanical tape library, and the VTL into mechanical tape library model, at the system level and the backup software layer after scanning the device can be put into use. The original STK mechanical tape library continues to function as a second-line standby device.

2 According to the user's business requirements and S2100 ES2 VTL, adjust the backup frequency of the original backup strategy to ensure that the user's RPO target.

3 Local SEPATON ES2 Virtual tape library configuration Site2 via CLI interface? The policy engine of the software, the policy engine can work with the backup software, automatically pick the data that needs to be replicated to the remote disaster-tolerant site, and realize the intelligence and automation of the tape transmission.

4 the same model of SEPATON Virtual Tape library is installed in the Beijing disaster-tolerant data center as the destination of backup image replication, and also as the destination of other ancillary business backup. Is there a Site2 installed on it? Software.

5 Perform a full backup in Shanghai center, activate Site2 via CLI? Replication process to test the performance of the entire disaster recovery system to meet user requirements by transferring the backup virtual tapes to the center of Beijing.

6) for the user to develop a disaster emergency treatment plan, for rehearsal. Ensure that users can quickly recover from remote disaster-tolerant sites and document the staging process as a guideline for future disaster preparedness.