Good day Storage fans!
Following the previous article on another storage term that starts with 'Hyper', it was time to move on to another pretty 'demanded' keyword observed through the Community search bar, that is HyperReplication.
A key concept in the storage industry, HyperReplication has managed to impose itself as a leading technology in the enterprise environment. Let's discover together exactly why from the below paragraphs!
BACKGROUND INFORMATION
HyperReplication is the remote replication feature developed by Huawei. The feature provides flexible and powerful data replication functions to achieve remote data backup and recovery, continuous support for service data and disaster recovery (DR).
TYPES OF DEPLOYMENT MODES
When a storage system runs block services, HyperReplication supports the following two modes:
synchronous remote replication - data is synchronized in real time to achieve full protection for data consistency, minimizing data loss in the event of a disaster;
asynchronous remote replication - data is synchronized periodically to minimize service performance deterioration caused by the latency of long-distance data transmission.
BASIC CONCEPTS
This section describes the basic concepts related to the HyperReplication feature:
Remote Replication Pair - the relationship between a primary logical unit number (LUN) and a secondary LUN in a remote replication task;
Synchronization - the process of copying data from the primary LUN to the secondary LUN;
Splitting - the process of stopping data synchronization between primary and secondary LUNs;
Primary/Secondary Switchover - the process of exchanging the roles of the primary and secondary LUNs in a pair relationship;
Data Status - by determining data differences between a primary and a secondary LUN, the HyperReplication feature identifies the data status of the current pair;
Writable Secondary LUN - hosts can send data to secondary LUNs, so after the HyperReplication feature is configured, the secondary LUN is read-only by default and if the primary LUN is faulty, the administrator can cancel write protection for the secondary LUN and set the secondary LUN to writable;
Link Compression - an inline compression technology;
Optimizing Data Synchronization Performance - after optimization, data is transferred to the remote storage system through the optimal path, avoiding the impact of I/O forwarding on performance and improves data synchronization efficiency.
BENEFITS
The table below lists the benefits of the HyperReplication feature:
| Function | Purpose | Benefit |
| Remote backup and recovery | To recover service data using backup data in the remote storage system after the service data becomes unusable | Prevents damage caused by data loss in the case that data at the primary site becomes unusable |
| Continuous support for services | To quickly switch service data from the primary site to the secondary site, protecting service continuity | Prevents damage caused by a service interruption upon a failure at the primary site |
| Disaster recovery | To recover data at the primary site using backup data at the secondary site in the event of a disaster | Prevents the damage caused by service data loss or a long recovery duration upon a disaster |
Note 1: A primary site is a production center that includes the primary storage system, application servers and links. Note 2: A secondary site is a backup center that includes the secondary storage system, application servers and links. Note 3: Unless otherwise specified, hosts mentioned in this document refer to application servers. | ||
THE BOTTOM LINE
A more than crucial aspect within the storage industry, HyperReplication always comes in handy whenever it is 'called upon' to be employed. More information on HyperReplication can be found by accessing this link.
Stay tuned to our weekly blog digest by subscribing to the Community blog and don't forget - we're here to help you solve any HyperReplication-related issue: https://forum.huawei.com/enterprise/en/Storage/forum/891.
