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HA storage cluster

Nowadays computers have become the primary working tool for many people. Using computer systems, we process huge amounts of data every day, use various services, knowledge bases and save very important data. Continuity of access to these systems in many cases is critical. A breakdown in the computer system work due to hardware failure may generate a huge loss for our businesses, or even cost someone's health or life at worst. To ensure continuity of access to computer systems, we build these systems using high availability components. One of the key elements in these systems is high-availability (HA) storage.

An HA storage cluster is a solution consisting of at least two independent storage servers running under the control of appropriate software. In the case when one of them fails, the other immediately takes over all the duties of the system that has failed. However, to make this solution work effectively and efficiently it is necessary to use high-end hardware and software.

Hardware

Hardware designed for HA storage cluster solutions should meet the highest standards and represent high quality. Here are the basic requirements for hardware:

  • A server platform with two quad-core CPUs for high performance
  • H/W RAID controller with support for RAID5 or RAID6 for data safety and high performance
  • Enterprise class SATA drives for high speed drive transfers and data reliability
  • Four network interfaces for efficient network connecting
  • Redundant power supply for system reliability

Software

Providing uninterrupted service is the basic requirement for storage software. Only superior solutions can guarantee reliability and smooth continuous operation. Below are presented some basic specifications:

  • iSCSI and NAS (NFS) failover for high availability
  • support for SAS/SATA RAID Controllers for data safety
  • Built-in, SNMP-Based Monitoring System and E-mail notification for monitoring HA cluster nodes

Recommended solution for for HA storage cluster solutions: Open-E DSS V6. The software meets all the requirements needed for implementation of such a solution.

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