Data Check: Namespace Scan Option
The namespace scan option focuses on file attributes such as file size, file name, permissions, and last time modified.
Data integrity verification is done using a checksum process. You can choose to enable or disable the Data Check
namespace scan in the DR Series system based on the command setting you select.
Data Check: Blockmap Scan Option
The blockmap scan option identifies a specific mapping of data contained within a block, with a block being a structured
form of data that the DR Series system can identify. You can choose to enable or disable the Data Check blockmap scan
based on the command option you select.
Data Check: All Data Scan Option
The All scan option is one of three options that can be selected for DR Series system data scan operations. The All scan
option identifies that both the namespace and blockmap options are to be included in the Data Check commands. You
can choose to enable or disable Data Check scans for both namespace and blockmap in the DR Series system based on
the specific command option you select.
Data Check CLI Commands
These DR Series system CLI commands allow you to perform the following Data Check-related scans and display
current Data Check status. There are two sets of Data Check related DR Series system CLI commands: system --
datacheck and stats --datacheck.
system --datacheck Commands
• Display the current Data Check state (enabled/disabled status for namespace, blockmap, or all). For more
information, see system --datacheck.
• Enable Data Check scans (namespace, blockmap, or all). For more information, see system --datacheck [--
enable <all | namespace | blockmap>].
• Disable Data Check scans (for namespace, blockmap, or all). For more information, see system --datacheck [--
disable <all | namespace | blockmap>].
• Set the percentage of available system resources to use for Data Check scans. For more information, see
system --datacheck [--throttle <1-100>].
• Display the list of Data Check help-related options that can be used as a reference when using the CLI. For more
information, see system --help datacheck.
stats --datacheck Commands
• Display the variety of Data Check statistics collected by the DR4000 system. For more information, see stats --
datacheck.
• Reset the Data Check statistics in the DR4000 system. For more information, see stats --reset --datacheck.
• Display the list of Data Check-related options that can be used as a reference when using the DR Series system
CLI. For more information, see stats --help datacheck.
System --Datacheck
This set of DR Series system CLI commands allow you to display the current Data Check status, enable and disable Data
Check scans on the DR Series system, set the throttle percentage of system resources to use for Data Check scans, and
display the system Data Check help-related options. For more information, see System --Datacheck Command Usage.
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