102Chapter 6 Operation andMaintenance1. Maintenance ServiceService representatives subordinate to or authorized by NEC provide services of the diskarray controller with use of genuine parts and high technical capabilities. You can get theservices for your own convenience.For the services, contact the NEC sales department or representatives.2. Preventive Maintenance2-1. Data BackupIn case of an unexpected accident, it is recommended to back up data in HDDs routinely.For the data backup, refer to the User’s Guide of the server.2-2. Preventive Maintenance by MediaPatrol/SynchronizationIt is recommended to perform media patrol or synchronization routinely as preventivemaintenance against subsequent defects of HDDs. These features allow subsequentdefects of HDDs to be found and repaired as soon as possible. Both the features can bedone routinely by using the scheduling function of WebPAM.For details of the media patrol and synchronization, see "Chapter 3 Features of Disk ArrayController."The recommended scheduling interval is once per week. Depending on the operationstatus of your system, the scheduling interval should be at least once per month.CheckTo utilize the media patrol or synchronization, WebPAM must be installed.
