About NetBackup Appliance memory requirements
Beginning with NetBackup Appliance software version 3.1, the security posture of MSDP has been improved by moving from MD5 to SHA-256 for the fingerprinting process. This change has increased the demand on memory consumption in large deduplication pool configurations.
The following describes the guidance for appliance memory footprint requirements that you should follow to ensure optimal performance with MSDP:
NetBackup 5240
For all storage configurations with an MSDP pool of 150TB or larger, Cohesity strongly recommends that you upgrade the memory capacity to a minimum of 192GB.
For all storage configurations with an MSDP pool of 250TB or larger, Cohesity strongly recommends that you upgrade the memory capacity to a minimum of 256GB.
A 256GB memory upgrade kit is now available for purchase, which replaces all existing DIMM modules in the appliance. Contact your account representative for details.
NetBackup 5250
For all storage configurations with an MSDP pool of 150TB or larger, Cohesity strongly recommends that you upgrade the memory capacity to a minimum of 192GB.
For all storage configurations with an MSDP pool of 250TB or larger, Cohesity strongly recommends that you upgrade the memory capacity to a minimum of 256GB.
For all storage configurations with an MSDP pool of 325TB or larger, Cohesity strongly recommends that you upgrade the memory capacity to a minimum of 512GB.
A 256GB memory upgrade kit is also available for purchase for resource-intensive, high performance workload configurations. Contact your account representative for details.
NetBackup 5340
For all storage configurations with an MSDP pool of 960TB or larger, Cohesity strongly recommends upgrading the memory capacity to 1536GB.
NetBackup 5350
For all storage configurations with an MSDP pool of 960TB or larger, Cohesity strongly recommends upgrading the memory capacity to 1536GB.
Other factors can also contribute to additional memory utilization, including but not limited to the following:
High concurrent job/stream count
Larger MSDP fingerprint cache configurations
Primary server scheduling responsibilities