Dell EMC ECS “XOR” storage efficiency leverages the optimized scheduling component of LoadMaster. This method uses a URL Hash algorithm to distribute writes evenly across multiple sites and sends all reads to the site owning the object. This reduces ECS system overhead and WAN bandwidth, providing greater performance and optimization of S3 traffic.

The following section outlines the configuration options for using XOR with Dell EMC ECS. XOR deployments require a single VS and a SubVS for each VDC. The top-level VS and three SubVSs are set up by the application template. Additional SubVSs can be added if the environment has more than three VDCs.

Note: This scheduling method was introduced in LoadMaster version 7.2.47 and, therefore, this version or greater must be used.
  1. Deploy XOR VSs using the application template.
  2. Add additional SubVSs if applicable.
  3. Add the ECS nodes for each of the VDCs (sites).