HCP offers these features to help maximize network throughput and reduce the use of network bandwidth by read and write operations:
•Link aggregation — Each node in an HCP system has two bonded ports for connecting to the front-end network. When using a single front-end switch, you can take advantage of this setup by using two cables per node to connect to the switch and configuring both HCP and the applicable ports on the switch for active-active (802.3ad) bonding. The redundant ports and cables help ensure a high-availability connection to the front-end network, and the active-active bonding allows for increased network throughput.
•10Gb Ethernet connectivity — Optionally, for SAIN systems, HCP supports 10Gb Ethernet connectivity to the front-end network. The 10GbE network interface allows for greater network throughput than does the 1GbE interface option.
Systems with the 10GbE network interface on the front end also use 10GbE for the back-end network. This enables the HCP nodes to transmit data among themselves at a rate that supports the higher front-end throughput.
•Compressed data transmission — Clients that use the HTTP protocol to communicate with HCP can reduce network bandwidth usage by sending and receiving data in a compressed format. Before sending data to HCP, the client uses the publicly available gzip utility to compress the data. Upon receiving the data, HCP uncompresses it automatically before storing it. When requested to do so, HCP uses gzip to compress data before sending it to the client. The client then uses gunzip to uncompress the data.
For more information on compressed data transmission, see Using a Namespace and Using the Default Namespace.
•Combined data and custom metadata on reads and writes — Clients that use the HTTP protocol for namespace access can store or retrieve both the data and custom metadata for an object with a single request. Issuing a single request instead of separate requests for the data and custom metadata reduces the network load.
This feature can be used in conjunction with compressed data transmission to further reduce the network load.
For more information on combining data and custom metadata on reads and writes, see Using a Namespace and Using the Default Namespace.
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