Copyright © 2002 Legato Systems, Inc. AlphaStor 3.1 Support in NW Dan Gajanovic Legato Confidential

Legato Systems, Inc - Confidential and Proprietary 2 Introduction Prerequisites for attending this TOI session Overview and Benefits of the new feature Installation considerations How to configure/enable the feature Using the feature Licensing considerations Architecture and internal Design Debugging techniques and tips Questions and Answers

Legato Systems, Inc - Confidential and Proprietary 3 Prerequisites Prerequisites for attending this presentation Proprietary – nsrjb robustness TOI Rudimentary familiarity with AlphaStor

Legato Systems, Inc - Confidential and Proprietary 4 Overview and Benefits AlphaStor 3.1 introduced DMI as a replacement for CAPI CAPI is a loosely defined, grammar-oriented interface w/o support for async result reporting constant source of formatting/parsing issues too limited to support full NW integration DMI (Data Mover Interface) RPC-style strictly defined interface

Legato Systems, Inc - Confidential and Proprietary 5 Overview and Benefits (cont.) AS 3.1 still supports CAPI support for NW <= 7.2 non-NW clients NW 7.3 only supports DMI cannot interface with AS <= 3.0

Legato Systems, Inc - Confidential and Proprietary 6 Overview and Benefits (cont.) System requirements NW server OS support: NT (x86, Itanium) UNIX (Solaris, HP-UX, AIX) Linux (x86, x86_64, Itanium) Caveat for Tru64, IRIX NW servers 'remote library' config on a storage node running a supported OS Every storage node must have AlphaStor LCP & DCP daemons

Legato Systems, Inc - Confidential and Proprietary 7 Overview and Benefits Where to learn more NetWorker Admin Guide AlphaStor Admin Guide

Legato Systems, Inc - Confidential and Proprietary 8 Installation Considerations Changes to installation Visible changes to installation prompts none New binaries installed libpal and libdmi dynamic libraries – installed in /usr/lib/nsr (on Solaris) directly used only by nsrlcpd

Legato Systems, Inc - Confidential and Proprietary 9 Configuring the Feature How to enable and/or configure this feature AS support can only be configured through jbconfig (command line) Sequence of prompts similar to old AS/SmartMedia configuration One additional prompt: AlphaStor library name

Legato Systems, Inc - Confidential and Proprietary 10 Configuring the Feature (cont.) Sample output Jbconfig is running on host munin (SunOS 5.9), and is using munin as the NetWorker server. 1) Configure an AlphaStor Library. What kind of Jukebox are you configuring? [1] Installing an 'AlphaStor' jukebox. What name do you want to assign to the AlphaStor library? qualstar Name of AlphaStor server host machine? [munin] pankaj Port number of AlphaStor server? [44475] Library name managed by AlphaStor server? [qualstar] How many devices are to be configured (1 to 256)? [4]

Legato Systems, Inc - Confidential and Proprietary 11 Configuring the Feature (cont.) NSR Jukebox attributes control port : automatically set by jbconfig

Legato Systems, Inc - Confidential and Proprietary 12 Using the Feature New commands No new commands use nsrjb, as usual mount-by-characteristics nsrjb options are no longer supported GUI no AlphaStor/DMI specific GUI enhancements

Legato Systems, Inc - Confidential and Proprietary 13 Licensing Considerations This feature is licensed Licensing model for AlphaStor/DMI has not changed

Legato Systems, Inc - Confidential and Proprietary 14 Questions and Answers Any questions that have not been answered yet?

Legato Systems, Inc - Confidential and Proprietary 15 Architecture and Internal Design Architectural diagram nsrd nsrmm gd nsrjb nsrlcpd Lib1 Lib2 dmi_ser ver AS server AlphaStor land

Legato Systems, Inc - Confidential and Proprietary 16 Architecture and Internal Design (cont.) Notes on internal design 1:1 mapping between NW and AS jukebox One nsrlcpd daemon per NW jukebox (even if multiple storage nodes use the same library) dmi_server is the only direct point of contact with AlphaStor

Legato Systems, Inc - Confidential and Proprietary 17 Architecture and Internal Design (cont.) nsrlcpd maintains a persistent TCP/IP connection with dmi_server receives asynchronous notifications media import/export library up/down etc dmi_server listens on port 44475

Legato Systems, Inc - Confidential and Proprietary 18 Architecture and Internal Design (cont.) nsrlcpd can run either on NW server or NW storage node depends on where jbconfig is invoked the host running nsrlcpd need not be physically attached to the library the associated nsrmmd daemons may run on completely different storage nodes

Legato Systems, Inc - Confidential and Proprietary 19 Debugging Techniques and Tips How to obtain debugging or tracking information set “debug level” attribute for NW jukebox using nsradmin (show hidden attributes) most output shows up at level 4 level 5 enables extra detail output is logged in daemon.log debug messages come from nsrlcpd can be changed at runtime

Legato Systems, Inc - Confidential and Proprietary 20 Debugging Techniques and Tips (cont.) Common pitfalls If nsrlcpd cannot connect to dmi_server, the jukebox will not become ready examine daemon.log for the cause of the problem jbconfig's 'application ID' must match an entry in the AlphaStor's configured application list use AS GUI or asapplist/asappupdate command line tools

Legato Systems, Inc - Confidential and Proprietary 21 Debugging Techniques and Tips (cont.) Error messages customers might see Most fatal error messages are propagated to nsrjb and/or the GUI exception is errors during jukebox initialisation: only in daemon.log Debug output (if enabled) only shows up in daemon.log

Legato Systems, Inc - Confidential and Proprietary 22 Known Issues and Limitations Limitations Virtual libraries are not supported (multiple AS libraries showing up as a single NW jukebox) Needed by customers who wish to move media between libraries old workaround for a limitation of the NW/CAPI implementation NW/DMI supports this use case without resorting to virtual libraries

Legato Systems, Inc - Confidential and Proprietary 23 Questions and Answers Any questions that have not been answered yet? Thank you for attending

Legato Systems, Inc - Confidential and Proprietary 24 AlphaStor 3.1 Support in NetWorker 7.3