Tuning the MSDP configuration from the deduplication shell
The default MSDP configuration should work for most installations. However, if you need to make adjustments, use the following commands to set or view the parameters.
Parameter | Description | Commands |
|---|---|---|
AllocationUnitSize | The allocation unit size for the data on the server | To set the parameter: setting set-MSDP-param allocation-unit-size value=<number of MiB> To view the parameter: setting get-MSDP-param allocation-unit-size |
DataCheckDays | The number of days to check the data for consistency | To set the parameter: setting set-MSDP-param data-check-days value=<number of days> To view the parameter: setting get-MSDP-param data-check-days |
LogRetention | The length of time to keep logs | To set the parameter: setting set-MSDP-param log-retention value=<number of days> To view the parameter: setting get-MSDP-param log-retention |
MaxCacheSize | The maximum size of the NetBackup Deduplication Engine (spoold) fingerprint cache | To set the parameter: setting set-MSDP-param max-cache-size value=<number of GB> To view the parameter: setting get-MSDP-param max-cache-size |
MaxRetryCount | The maximum number of times to retry a failed transmission | To set the parameter: setting set-MSDP-param max-retry-count value=<number of retry times> To view the parameter: setting get-MSDP-param max-retry-count |
SpadLogging | The log level for the NetBackup Deduplication Manager (spad) | To set the parameter: setting set-MSDP-param spad-logging log_level=<value> See Setting the MSDP log level from the deduplication shell. To view the parameter: setting get-MSDP-param spad-logging |
SpooldLogging | The log level for the NetBackup Deduplication Engine (spoold) | To set the parameter: setting set-MSDP-param spoold-logging log_level=<value> See Setting the MSDP log level from the deduplication shell. To view the parameter: setting get-MSDP-param spoold-logging |
WriteThreadNum | The number of threads for writing data to the data container in parallel | To set the parameter: setting set-MSDP-param write-thread-num value=<number of threads> To view the parameter: setting get-MSDP-param write-thread-num |
CloudDataCacheSize | The default data cache size when the cloud LSU is added. Decrease this value if sufficient free space is not available. | To set the parameter: setting set-MSDP-param cloud-data-cache-size value=<number> To view the parameter: setting get-MSDP-param cloud-data-cache-size |
CloudMapCacheSize | The default map cache size when the cloud LSU is added. Decrease this value if sufficient free space is not available. | To set the parameter: setting set-MSDP-param cloud-map-cache-size value=<number> To view the parameter: setting get-MSDP-param cloud-map-cache-size |
CloudMetaCacheSize | The default meta cache size when the cloud LSU is added. Decrease this value if sufficient free space is not available. | To set the parameter: setting set-MSDP-param cloud-meta-cache-size value=<number> To view the parameter: setting get-MSDP-param cloud-meta-cache-size |
CloudUploadCacheSize | The default upload cache size when the cloud LSU is added. The minimum value is 12 GiB. | To set the parameter: setting set-MSDP-param cloud-upload-cache-size value=<number> To view the parameter: setting get-MSDP-param cloud-upload-cache-size |
EnableLocalPredictiveSamplingCache | The parameter to enable or disable the local predictive sampling cache. Both spoold and spad have this parameter, and it should be synced between them. | To set the parameter: setting set-MSDP-param enable-local-predictive-sampling-cache value=<true/false> To view the parameter: setting get-MSDP-param enable-local-predictive-sampling-cache |
MaxPredictiveCacheSize | The maximum size of the spoold predictive cache. | To set the parameter: setting set-MSDP-param max-predictive-cache-size value=<number of bytes/%> To view the parameter: setting get-MSDP-param max-predictive-cache-size |
MaxSamplingCacheSize | The maximum size of the spoold sampling cache. | To set the parameter: setting set-MSDP-param max-sampling-cache-size value=<number of bytes/%> To view the parameter: setting get-MSDP-param max-sampling-cache-size |
UsableMemoryLimit | The maximum usable memory size in spoold. | To set the parameter: setting set-MSDP-param usable-memory-limit value=<number of bytes/%> To view the parameter: setting get-MSDP-param usable-memory-limit |
MaxCacheSize(Cluster) | The maximum size of the spoold fingerprint cache for all nodes in a cluster. | To set the parameter: setting set-MSDP-param max-cache-size-cluster value=<number> To view the parameter: setting get-MSDP-param max-cache-size-cluster |
MaxPredictiveCacheSize(Cluster) | The maximum size of the spoold predictive cache for all nodes in a cluster. | To set the parameter: setting set-MSDP-param max-predictive-cache-size-cluster value=<number of bytes> To view the parameter: setting get-MSDP-param max-predictive-cache-size-cluster |
MaxSamplingCacheSize(Cluster) | The maximum size of the spoold sampling cache for all nodes in a cluster. | To set the parameter: setting set-MSDP-param max-sampling-cache-size-cluster value=<number of bytes> To view the parameter: setting get-MSDP-param max-sampling-cache-size-cluster |
UsableMemoryLimit(Cluster) | The maximum usable memory size in spoold for all nodes in a cluster. | To set the parameter: setting set-MSDP-param usable-memory-limit-cluster value=<number> To view the parameter: setting get-MSDP-param usable-memory-limit-cluster |
EnableLocalPredictiveSamplingCache(Cluster) | The parameter to enable or disable the local predictive sampling cache for all nodes in cluster. Both spoold and spad have this parameter, and it should be synced between them. | To set the parameter: setting set-MSDP-param enable-local-predictive-sampling-cache-cluster value=<true/false> To view the parameter: setting get-MSDP-param enable-local-predictive-sampling-cache-cluster |
VpfsCloudFPIndexRemovalThreshold (cluster) | The threshold to remove the cloud fingerprint index file for all nodes in the cluster. When the number of deleted data containers in a fingerprint index file is greater than the threshold, the fingerprint index file is removed. | To set the parameter: setting set-MSDP-param vpfs-cloud-fpindex-removal-threshold value=<%> To view the parameter: setting get-MSDP-param vpfs-cloud-fpindex-removal-threshold |
VpfsPCacheReloadThreshold (cluster) | The threshold for spoold to reload fingerprint from fingerprint index file based on the fingerprint in pcache that is replaced. This applies to all nodes in the cluster. | To set the parameter: setting set-MSDP-param vpfs-pcache-reload-threshold-cluster value=<%> To view the parameter: setting get-MSDP-param vpfs-pcache-reload-threshold-cluster |