Storage Node configuration settings

Depending on your requirements, there are several configuration settings for Storage Nodes that you can apply.

This table summarizes Storage Node configuration settings.
Service/ Component Attribute Name Code Description
LDR HTTP State HSTE Set the LDR service to one of:
  • Offline: No operations are allowed, and any client application that attempts to open an HTTP session to the LDR service receives an error message. Active sessions are gracefully closed.
  • Online: Operation continues normally
Auto-Start HTTP HTAS

Enable the HTTP component when the LDR service is restarted. If not selected, the HTTP interface remains Offline until explicitly enabled.

If Auto-Start HTTP is selected, the state of the system on restart depends on the state of the LDR > Storage component. If the LDR > Storage component is Read-only on restart, the HTTP interface is also Read-only. If the LDR > Storage component is Online, then HTTP is also Online. Otherwise, the HTTP interface remains in the Offline state.

LDR > Data Store Reset Lost Objects Count RCOR Reset to zero the counter for the number of lost objects on this service.
LDR > Storage Storage State – Desired SSDS

A user-configurable setting for the desired state of the storage component. The LDR service reads this value and attempts to match the status indicated by this attribute. The value is persistent across restarts.

For example, you can use this setting to force storage to become read-only even when there is ample available storage space. This can be useful for troubleshooting.

The attribute can take one of the following values:
  • Offline: When the desired state is Offline, the LDR service takes the LDR > Storage component offline.
  • Read-only: When the desired state is Read-only, the LDR service moves the storage state to read-only and stops accepting new content. Note that content might continue to be saved to the Storage Node for a short time until open sessions are closed.
  • Online: Leave the value at Online during normal system operations. The Storage State – Current of the storage component will be dynamically set by the service based on the condition of the LDR service, such as the amount of available object storage space. If space is low, the component becomes Read-only.
Health Check Timeout SHCT The time limit in seconds within which a health check test must complete in order for a storage volume to be considered healthy. Only change this value when directed to do so by Support.
LDR > Verification Reset Missing Objects Count VCMI Resets the count of Missing Objects Detected (OMIS). Use only after foreground verification completes. Missing replicated object data is restored automatically by the StorageGRID Webscale system.
Verify FVOV Select object stores on which to perform foreground verification.
Verification Rate VPRI Set the priority rate at which background verification takes place. See information on configuring the background verification rate.
Reset Corrupt Objects Count VCCR Reset the counter for corrupt replicated object data found during background verification. This option can be used to clear the Corrupt Objects Detected (OCOR) alarm condition. For details, see the information about troubleshooting.
LDR > Erasure Coding Reset Writes Failure Count RSWF Reset to zero the counter for write failures of erasure coded object data to the Storage Node.
Reset Reads Failure Count RSRF Reset to zero the counter for read failures of erasure coded object data from the Storage Node.
Reset Deletes Failure Count RSDF Reset to zero the counter for delete failures of erasure coded object data from the Storage Node.
Reset Corrupt Copies Detected Count RSCC Reset to zero the counter for the number of corrupt copies of erasure coded object data on the Storage Node.
Reset Corrupt Fragments Detected Count RSCD Reset to zero the counter for corrupt fragments of erasure coded object data on the Storage Node.
Reset Missing Fragments Detected Count RSMD Reset to zero the counter for missing fragments of erasure coded object data on the Storage Node. Use only after foreground verification completes.
LDR > Replication Reset Inbound Replication Failure Count RICR Reset to zero the counter for inbound replication failures. This can be used to clear the RIRF (Inbound Replication – Failed) alarm.
Reset Outbound Replication Failure Count ROCR Reset to zero the counter for outbound replication failures. This can be used to clear the RORF (Outbound Replications – Failed) alarm.
Disable Inbound Replication DSIR

Select to disable inbound replication as part of a maintenance or testing procedure. Leave unchecked during normal operation.

When inbound replication is disabled, objects can be retrieved from the Storage Node for copying to other locations in the StorageGRID Webscale system, but objects cannot be copied to this Storage Node from other locations: the LDR service is read-only.

Disable Outbound Replication DSOR

Select to disable outbound replication (including content requests for HTTP retrievals) as part of a maintenance or testing procedure. Leave unchecked during normal operation.

When outbound replication is disabled, objects can be copied to this Storage Node, but objects cannot be retrieved from the Storage Node to be copied to other locations in the StorageGRID Webscale system. The LDR service is write-only.

LDR > HTTP Reset HTTP Counts LHAC Reset to zero the counter for all HTTP transactions.