Office of the Chief Information Officer

United States Department of Agriculture

SAN Storage


Service Description

The Digital Infrastructure Services Center (DISC) Storage Area Network (SAN) provides a robust disk storage infrastructure for Collocation, Managed Hosting, and Cloud Service customers. DISC exploits storage virtualization technologies, strict standards, and economies of scale to enable rapid delivery of cost-effective, fully-managed disk storage cost/performance options.

What is Included

  • Enterprise-class virtualized disk storage controllers
    • High scalability
    • High performance
    • High availability
    • Robust data replication and migration features
      • Local disk cloning
      • Remote replication for disaster recovery
        • Primary Disk - Continuous
        • Backup Disk - Manual or Scripted
    • Three virtualized disk storage options
  • Redundant SAN architecture
    • Dual-fabric architecture
    • Enterprise-class directors and switches
  • Security of mission-critical data provided through management of access rights
  • Periodic technology refresh
  • Fully secured data access and inheritable controls
  • Proper disposal of failed data components
  • Disaster recovery support for replicated data
  • Dynamic load balancing path management software
  • Recommended Backup/Archive services are also available

Disk Storage Options

Option Performance Purpose
Tier 1 High Performance Sensitive
Tier 2 Medium Typical Applications
Tier 3 Low Backup and Archive

How We Charge

Charges are based on connectivity requirements and actual disk allocations by tier.

Price drivers:

  • Number of SAN ports utilized
  • Storage Allocation in Gigabytes
  • Additional charges may apply for storage allocation associated with any local or remote replication

Service Level Metrics

Measure Service Level Targets
Infrastructure Monitoring 24 x 7
Incident Response 24 x 7
Infrastructure Availability 99.9%* or more

* Target availability does not include any scheduled downtime and requires dual SAN/NAS connectivity to the storage infrastructure.

Cost Saving Tips

  • Utilize disk storage tiers appropriately
  • Utilize provided path management software or native Operating System capabilities
  • Proactively inform DISC of disk storage requirements

Additional Information

  • File system and database recovery procedures are typically required for Disaster Recovery

Contact Us: