The Log Space panel displays this information about the current log space for the cluster:
Database (Instance) – name of the log space. If the log is specific for an instance, the instance name appears in parentheses. If there are no parentheses, the log is for the cluster.
Total (MB) – total amount of log space available, in megabytes.
Used (MB) – amount of log space currently used, in megabytes.
Free (MB) – amount of free space available for the log, in megabytes.
Used – percentage of the total space currently used.