Server requirements

The minimum hardware and software requirements for the Historian are based on the tag count and the anticipated data throughput rate. These requirements are divided into four levels, which are outlined in this section.

You need to ensure that the memory that SQL Server reserves for the Historian is adequate for the expected load. Based on your particular environment, you may need to adjust the SQL Server MemToLeave allocation. For more information on MemToLeave, see the Microsoft documentation.

You can install the Historian on operating systems that have the User Account Control (UAC) turned on.

If you are running the Historian on a virtual server, the historian must have an adequate CPU, adequate network memory, and disk I/O resources at all times. Overloading the virtual server leads to unpredictable behavior. See System sizing guidelines for general hardware requirements.

Operating systems

Any supported 64-bit operating system. See the AVEVA Global Customer Support (GCS) Technology Matrix.

Microsoft SQL Server

For supported 64-bit Microsoft SQL Server versions, see the AVEVA GCS Technology Matrix.

Disk space

• 300 MB of free disk space to install the Historian

• Appropriate space for history block storage. For more information, see Disk sizing and data storage.

Level 1 server - hardware

A Level 1 server can handle a load of about 5,000 tags. For example, 2,600 analogs, 2,200 discretes, 300 strings, and 20 non-I/O Server (manual) tags.

When replicating to AVEVA Insight, each Level 1 server can support up to 15,000 tags and 5,000 values per second.

The requirements are:

• Processor:

  • Minimum: P4 3.2 GHz CPU

  • Recommended: dual-core CPU

• RAM:

  • Minimum: 2 GB

  • Recommended: 4 GB

• 100 Mbps network interface card (NIC)

Level 2 server - hardware

A Level 2 server can handle a load of about 100,000 tags, with 50% analog, 45% discrete, and 5% string tags. The requirements are:

• Processor:

  • Minimum: P4 3.0 GHz dual CPU

  • Recommended: quad-core CPU

• RAM:

  • Minimum: 4 GB

  • Recommended: 8 GB

• 1 Gbps network interface card (NIC)

Level 3 server - hardware

A Level 3 server can handle a load of 150,000 tags, with 50% analog, 45% discrete, and 5% string tags. The requirements are:

• Processor:

  • Minimum: P4 2.7 GHz Xeon quad CPU

  • Recommended: dual processor, quad-core CPUs

• RAM:

  • Minimum: 6 GB

  • Recommended: 12 GB

• 1 Gbps network interface card

Level 4 server - hardware

A Level 4 server can handle a load of 2,000,000 tags, with 50% analog, 45% discrete, and 5% string tags. The requirements are:

• Processor:

  • Recommended: two quad-core CPUs

• RAM:

  • Minimum: 24 GB

  • Recommended: 48 GB

• 1 Gbps network interface card

A performance report for different historian systems is provided in System sizing examples.