550 Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.1
This technology can improve remote mirroring network bandwidth usage up to three times,
which can enable clients to deploy a less costly network infrastructure, or speed up remote
replication cycles to enhance disaster recovery effectiveness.
With an Ethernet network data flow, the data transfer can slow down over time. This condition
occurs because of the latency that is caused by waiting for the acknowledgment of each set of
packets that are sent. The next packet set cannot be sent until the previous packet is
acknowledged, as shown in Figure 10-72.
Figure 10-72 Typical Ethernet network data flow
However, by using the embedded IP replication, this behavior can be eliminated with the
enhanced parallelism of the data flow by using multiple virtual connections (VC) that share IP
links and addresses. The artificial intelligence engine can dynamically adjust the number of
VCs, receive window size, and packet size as appropriate to maintain optimum performance.
While the engine is waiting for one VC’s ACK, it sends more packets across other VCs. If
packets are lost from any VC, data is automatically retransmitted, as shown in Figure 10-73.
Figure 10-73 Optimized network data flow by using Bridgeworks SANSlide technology
For more information about this technology, see IBM Storwize V7000 and SANSlide
Implementation, REDP-5023.
With native IP partnership, the following Copy Services features are supported:
Metro Mirror (MM)
Referred to as
synchronous replication, MM provides a consistent copy of a source virtual
disk on a target virtual disk. Data is written to the target virtual disk synchronously after it
is written to the source virtual disk so that the copy is continuously updated.
To Next Page
Loading...
Need help?
General