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Critical services (such as bank transaction settlement and telecom billing) of customers must be available around the clock. Once a fault or disaster occurs, the DR center must be able to take over services in real time. Active-active solutions naturally become an optimal choice to ensure the continuity of critical services.
There are two active-active modes in the current storage industry: the active-passive (AP) mode and the active-active (AA) mode.
l In active-passive mode, some services run on DC A, with DC B as the hot backup, while other services run on DC B, with DC A as the hot backup. This achieves approximate active-active effects.
l In active-active mode, all I/O paths can access active-active LUNs to achieve load balancing and seamless failover.
The OceanStor 18000 V5 employs the AA mode. Two sites simultaneously provide services, fully utilizing DR resources.
However, the traditional active-active solution requires customers to deploy independent external gateways, largely complicating networking and driving up purchase and management costs. The deployment of external gateways adds more nodes to the IT system, prolonging system latency and compromising the overall system performance.
Drawing strength from HyperMetro (gateway-free active-active solution), the OceanStor 18000 V5 uses its own storage software to implement active-active without requiring any extra gateways. Huawei active-active solution ensures service continuity for customers. The advantages of this solution are as follows:
1. The active-active architecture supports concurrent read and write operations, fully utilizing DR resources.
2. No gateways are required, reducing fault points and improving system reliability.
3. The CAPEX is reduced, the I/O processing path is shortened, and performance bottlenecks caused by gateways are resolved.
4. Heterogeneous storage systems are supported, reusing existing devices.
5. FastWrite and network self-adaptation improve active-active performance.
6. This solution can be smoothly expanded to data protection solutions, such as 3DC and centralized DR.
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