Data Consistency Checking:
-Necessary
constantly to monitor the condition of the data in the archive.
-Data
Consistency Checking – Thread running in background.
-Possible
to tune the amount of resources occupied by the service.
-A
check run can be scheduled to run periodically via the configuration.
-Checksum
check, file availability, unregistered files on storage media.
-A
check sub-thread is started per disk (max. number configurable).
-Info
about files on the system dumped once in a DBM, retrieved file by file during
checking.
-Possible
to resume a checking from where the previous was interrupted.
-Email
Notification send to subscribers in case problems found, e.g.:
Subject: NGAS-arcus2-7778: DATA INCONSISTENCY(IES) FOUND
Date: Fri, 25 Jan 2002 01:06:26
+0100 (MET)
From: jknudstr@eso.org
Error Message:
DATA INCONSISTENY(IES) FOUND IN DATA HOLDING:
Date:
2002-02-12T15:32:05.424
NGAS Host: arcus2
Inconsistencies: 1
Problem Description
File ID
Version
----------------------------------------------------------------------------------
ERROR: Inconsistent checksum found
TEST.2001-05-08T15:25:00.123
3
----------------------------------------------------------------------------------