8464ch02_Architecture.fm Draft Document for Review February 7, 2020 3:15 pm REQ  command. For more information, see  TS7700 Library Request  Command V5.0 , WP101091.  A subtle difference exists between the  DS QLIB  and  LI  Commands, but it is important to  understand. The  DS QLIB  command can return different data, depending on which host it is  entered. An  LI  command returns the same data without regard to the host if both hosts have  full accessibility. The TS7700 provides a method within the MI to customize if and how alerts are surfaced by  the TS7700. Each can be independently modified in the following way: DS QLIB Use the  DEVICE SERVICES QUERY LIBRARY  command to display library  and device-related information for the composite and distributed  libraries. Automation handling and messages Remote System Log Processing Support  Tools Call Home support The changes to the event notification settings are grid wide and persistent if new microcode  levels are installed. In addition, you can back up these settings and restore them independently on other grids to  improve the ease of managing maintenance of a multi-grid environment.  For information about content-based retrieval (CBR xxxx ) messages, see  hTS7700 Series  Operator Informational Messages , WP101689. Many helpful tools are available for the TS7700. For more information, see Chapter 9,  “Configuring and operating the IBM TS7700” on page 339. Because security is becoming a critical aspect for most customers, all events and messages  can be sent to one or two different RSYSLOG servers. Remote System Log Processing  Support (RSYSLOG) is an open standard utility that uses TCP for the message transport. An MI interface is provided to configure a TCP port and an IP address to an RSYSLOG server  to send the events from TS7700. GLYPH<SM590000> Customized severity GLYPH<SM590000> Whether the notification is surfaced GLYPH<SM590000> To which notification channels (Host, SNMP, RSYSLOG server) the message is sent GLYPH<SM590000> Sending more custom text information to the notification channels to help with automation GLYPH<SM590000> Inside the TS7700 components  GLYPH<SM590000> In the associated TS3500 or TS4500 library and tape drives (if present) GLYPH<SM590000> In the cache disk subsystem The Call Home function automatically generates a service alert when a problem is detected  within the subsystem, such as a problem in the following components: Status information is transmitted to the IBM Support Center for problem evaluation. An IBM  Service Support Representative (IBM SSR) can be dispatched to the installation site if  maintenance is required. Call Home is part of the service strategy that is adopted in the  TS7700 family. It is also used in a broad range of tape products, including VTS models and  tape controllers.  Chapter 2. Architecture, components, and functional characteristics  27