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Sun Microsystems 2.1 manual Sun MediaCenter Hardware

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■a Content Manager (CM), which includes an RPC-based API that allows users to move content between servers or between a server and a client.

■Web-based tools that allow you to conﬁgure a Sun MediaCenter server, monitor server operations, and transfer video content to a server.

The Sun MediaCenter server delivers MPEG bit streams at a constant bit rate. The content of the streams are stored on an array of disks. The server guarantees that, unless the server hardware fails, once a stream request is accepted, it will be delivered at the speciﬁed constant bit rate until the stream ends or the server is told to stop.

Using a Sun MediaCenter server, you can begin playing a stream within seconds after storage of that stream on the server has started. This feature is called “playthrough”.

The Sun MediaCenter server protects against single-disk failures by implementing a parity mechanism similar to RAID Level 4 (Block-Interleaved Parity).

1.2Sun MediaCenter Hardware

The Sun MediaCenter product line is built upon existing Sun hardware and software. This provides you with excellent performance (especially in terms of cost per stream) and ﬂexibility in interfacing Sun MediaCenter servers to their environment.

Each model of the Sun MediaCenter product line is designed to maximize input/ output throughput from the server’s disk subsystem through a network interface, to an output device. Each model is equipped with a large amount of RAM, for buffering streams and handling online content loading, and a large amount of disk storage.

Within a disk subsystem, speciﬁc disk models are chosen for their appropriateness for multimedia applications.

The Sun MediaCenter hardware architecture is shown in FIGURE 1-1.

1-2Sun MediaCenter Server Administrator’s Guide • December 1997

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Sun Microsystems 2.1 manual Sun MediaCenter Hardware

Contents

A Sun Microsystems, Inc. Business 901 San Antonio Road Sun MediaCenter Server Administrator’s GuideRelease Palo Alto, CA 94303 USA 415 960-1300 fax 4151997 Sun Microsystems, Inc. All rights reserved 1. Introduction Contents2. Preparing and Loading Content 3. Monitoring the Server 4. Moving Contentiv Sun MediaCenter Server Administrator’s Guide December 5. Sun MediaCenter Server Utilities 6. Sun MediaCenter Server FTP Daemon8.2.1 mfs df 8.2.2 mfs diskusg 8.2.3 mfs repair 8.2.4 mkmfs vi Sun MediaCenter Server Administrator’s Guide DecemberA. Setting up the SNMP Agent 9. Access Control Lists10. Troubleshooting B. Creating a Content Package B-1viii Sun MediaCenter Server Administrator’s Guide December Glossary Glossary-1 Index Index-1Preface Who Should Use This Bookx Sun MediaCenter Server Administrator’s Guide December The Sun MediaCenter Documentation SuiteHow This Book Is Organized What Typographic Changes Mean TABLE P-1 Typographic ConventionsTABLE P-2 Shell Prompts Shell Prompts in Command Examplesxii Sun MediaCenter Server Administrator’s Guide December ShellIntroduction 1.1 Introduction1.2 Sun MediaCenter Hardware Fast Ethernet or ATM Fast/Wide or Ultra SCSI Control Content From tape, network-accessible ﬁle, or live sourceSun MediaCenter Server Media File System Files1.3 Sun MediaCenter Software FIGURE 1-2 Sun MediaCenter Software Architecture1.3.1 Media File System MFS Guaranteed stream delivery rateRecovery from single-disk failures Independent streamsHot swappability High-resolution rate controlRandom access Efﬁcient use of disk bandwidthDisk Driver 1.3.2 Media Stream ManagerMedia File System Layout Manager Scheduler Bit Pump Buffers Output Driver1.3.4 Web-based Tools 1.3.3 Content Manager1.4 Video Output Interfaces MediaCenter Server Programmer’s GuideFIGURE 1-4 Sun MediaCenter Servers in ATM Environment 1.4.1 ATM1.4.2 LAN 1.5 Content Preparation and Loading FIGURE 1-5 Sun MediaCenter Servers in LAN environment1.6 Server Management 1.7 Push Model1.8 Design Beneﬁts 1-12 Sun MediaCenter Server Administrator’s Guide DecemberPreparing and Loading Content 2.1 General MPEG Encoding Requirements2.2 MPEG Encoding Requirements for Trick Play 2.3 Splice Points 2.3.1 Packet Boundary2.3.2 closedgop 2.3.3 payloadunitstartindicator2.3.5 randomaccessindicator 2.3.4 adaptationﬁeldcontrol2.4 Content Loading To copy to or extract from a tape device, use smctar 2.5 References 2-8 Sun MediaCenter Server Administrator’s Guide December Monitoring the Server 3.1 Overview3.2 Using the WebAdmin Tool 3.2.1 Invoking the ToolFIGURE 3-1 Sun MediaCenter Page Chapter 3 Monitoring the ServerFIGURE 3-2 Resource Utilization Page 3-4 Sun MediaCenter Server Administrator’s Guide DecemberOnce the applet loads, the Resource Utilization page is displayed 3.3 Resource Utilization 3.2.2 Common Page ElementsVideos being copied 3.4 Streaming VideosTroubleshooting Disk CapacityFIGURE 3-3 Streaming Videos Page speed Fast-Forward, Slow Motion, Stopped, Playing, Reverse 3-8 Sun MediaCenter Server Administrator’s Guide Decemberthe title being viewed FIGURE 3-4 Streaming Videos Page with Stream Detail3.5 Copy Sessions title of the content being transferred Chapter 3 Monitoring the Server The Session Information page is shown belowFIGURE 3-6 Session Information Page 3.6 Disk Capacity FIGURE 3-7 Disk Capacity Page The Disk Info page is shown below The Troubleshooting page is shown below 3.7 TroubleshootingThe bottom portion of the page shows any late events or disk errors Chapter 3 Monitoring the ServerThe Troubleshooting page contains the following links The Disk Health page is shown below 3.7.1 Disk HealthThis page shows the status of disks in the MFS Chapter 3 Monitoring the Server3.7.2 Console Log FIGURE 3-11 Console Log Page Chapter 3 Monitoring the ServerThe Bitpump page is shown below 3.7.3 Scheduler and Bitpump3-20 Sun MediaCenter Server Administrator’s Guide December TABLE 3-1 describes the ﬁelds in this page TABLE 3-1 Scheduler and Bitpump StatisticsTABLE 3-1 Scheduler and Bitpump Statistics Continued Current number of bit pump streams bitPumpbitPumpStreams bitPumpBandwidth3-24 Sun MediaCenter Server Administrator’s Guide December Moving Content 4.1 Overview4.2 Using CmTool 4.2.1 Invoking the ToolChapter 4 Moving Content FIGURE 4-1 Sun MediaCenter PageFIGURE 4-2 Table of Contents Page 4-4 Sun MediaCenter Server Administrator’s Guide December4.3 Loading Content 4.2.2 Common Page Elements4-6 Sun MediaCenter Server Administrator’s Guide December Upon successful login, the Load Content page is displayedFIGURE 4-3 Server Login Page FIGURE 4-4 Load Content Page FIGURE 4-5 Content on Remote System 4-8 Sun MediaCenter Server Administrator’s Guide DecemberChapter 4 Moving Content FIGURE 4-6 Specifying a Local Title4-10 Sun MediaCenter Server Administrator’s Guide December FIGURE 4-7 Copy ConﬁrmationFIGURE 4-8 Session Information 4-12 Sun MediaCenter Server Administrator’s Guide December 4.4 Table of Contents PageFIGURE 4-9 Table of Contents Page 4.4.1 View Menu FIGURE 4-10 Display Attributes Dialog BoxFIGURE 4-12 Filter Dialog Box 4-14 Sun MediaCenter Server Administrator’s Guide DecemberFIGURE 4-11 Sort Dialog Box 4.4.2 Selected Menu FIGURE 4-13 Title Information Page4-16 Sun MediaCenter Server Administrator’s Guide December 5.1 Setting a Title Access Control List Sun MediaCenter Server UtilitiesTo extend access for a title that you own, use the smcsettacl command where username is a Solaris login name hostnametitle 5.2 The smccopy Utilitytitle r rate ﬁlenamehostnameﬁlename s speedt type The following are examples of smccopy useThe following command copies a ﬁle between two local ﬁlesystems b blknum 5.3 The smctar Utility5.3.1 Syntax and Options 5.3.2 Content Loading 5.3.3 Copying Content FIGURE 5-1 Loading Content with smctartar Device or File Sun MediaCenter MFSTitle Optional Sun MediaCenter Title MFS5.3.4 Remote Copying and Extraction 5.3.5 Examplesserver# smctar xf /dev/rmt/0 smcserverbambi server# tar cf - your title.TOC your content.mpg smctar xfremotehost# tar cf - your title.TOC your content.mpg smctar xf \ remotehost# smctar cf /dev/rmt/0 smcserverbambiAn alternative to the preceding commands is #!/bin/sh # smcbackup Script to archive multiple SMC titles to tape 5-16 Sun MediaCenter Server Administrator’s Guide December 5.4 The smcls Utility Display the format of this title Display the time the title was last modiﬁed smcls my-server”a-z*” 5-20 Sun MediaCenter Server Administrator’s Guide Decemberclient% smcls -lt server% smcrm SUNWbambi SGIquovadis 5.5 The smcrm Utilitysmcls -lrtB 5-22 Sun MediaCenter Server Administrator’s Guide December Sun MediaCenter Server FTP Daemon Standard 6-2 Sun MediaCenter Server Administrator’s Guide DecemberFIGURE 6-1 Sun MediaCenter FTP Functions Daemon6.1 Keyword for Video-File Functions 6.2 Video-File Attributes 6.3 Video-File Commands delete dir get ls mget mls mput put renameftp dir smctitle=Bat\ 6-6 Sun MediaCenter Server Administrator’s Guide Decemberftp dir smctitle=\ list continues to conclusion 6.3.1 Listing Fileslist continues to conclusion 6-8 Sun MediaCenter Server Administrator’s Guide December 6.3.2 Moving Files 6.3.2.1 Moving Single Titles Directions of put/ get CommandsPage 6.3.2.2 Moving Multiple Titles 6.3.3 Renaming Files 6.4 Loading Content with ftp 6.3.4 Deleting Files230 User clinton logged in. ftp lcd /home/encode ftp bin 331 Password required for clinton. Passwordencodingmachine% ftp smcserverone Connected to smcserverone 200 Type set to6-16 Sun MediaCenter Server Administrator’s Guide December Server Output Data Format 7.1 Introduction7.2.1 MPEG-2 Transport Stream Packet Encapsulation Content7.2 ATM Encapsulation Sun MediaCenter Server7.2.4 Thomson Electronics Packet Encapsulation 7.2.2 MPEG-2 Program Stream Packet Encapsulation7.2.3 MPEG-1 System Stream Packet Encapsulation 7.2.5 MPEG-2 Encapsulation over Classical IP over AAL57.3.2 MPEG-2 over Classical IP over AAL5 7.3 ATM Addressing7.3.1 MPEG over AAL5 7.4 Fast Ethernet Encapsulation host=IP hostname,udpport=UDPport num7.4.1 MPEG-2 Transport Stream Packet Encapsulation FIGURE 7-2 LAN/Enterprise Scenario7.4.3 MPEG-1 System Stream Packet Encapsulation 7.5 Fast Ethernet Addressing7.4.2 MPEG-2 Program Stream Packet Encapsulation 7.4.4 Thomson Electronics Encapsulation7.6 Specifying Encapsulation TABLE 7-1 Value of encap Field in MsmConnect7.7 Differences Among Different Types of Links 7.8 References7-10 Sun MediaCenter Server Administrator’s Guide December Administering MFS Disks 8.1 Monitoring MFS Disks8.2 MFS Utilities 8.2.1 mfs dfmfs df usage is as follows 8.2.2 mfs diskusg 8.2.3 mfs repair d device mfs repair usage is as followsTo ﬁnd out which MFS disk has failed, you enter 8.2.4 mkmfs Drive name /dev/rdsk/c1t1d0s2 Drive name /dev/rdsk/c1t2d0s2 8.3 Replacing a Failed Disk 8-10 Sun MediaCenter Server Administrator’s Guide Decemberserver# mfs repair -rp -d /dev/rdsk/c1t4d0s2 server# mfs repair -r -d /dev/rdsk/c1t4d0s2server# mfs repair -p -d /dev/rdsk/c1t4d0s2 Note -Two overlapping disk failures result in a system panic Access Control Lists 9.1 ACL Filesuserpermission 9.2 Permissions9.3 Server ACL nobodypermission9.4 Player ACL 9.5 Title ACL 9.6 Session ACLA session ACL has a single type of permission 9-6 Sun MediaCenter Server Administrator’s Guide December Server watchdog resets on start of video stream playback Troubleshooting10.1 Symptoms and Possible Solutions/ Workarounds 10-2 Sun MediaCenter Server Administrator’s Guide December Underperforming stream outputNo video displays on client Kernel panic with SAHI queue threshold messages Poor video qualityCorrupt disk labels Disk failureUnable to create title on the MFS 10.2 Error Messages10.2.1 Server Console Messages NOTICE ba0 qsize OK 10.2.2 MFS Error MessagesWARNING stream id 107 ba@426,3,80@ xmit error Q size NOTICE ba3 qsize 9 above hiwat10-6 Sun MediaCenter Server Administrator’s Guide December Setting up the SNMP Agent A.1 The Sun MediaCenter Server MIB TABLE A-1 Sun MediaCenter Server MIB DeﬁnitionsdiskErrorTable Appendix A Setting up the SNMP Agent A-3diskError bitPumpfailure A-4 Sun MediaCenter Server Administrator’s Guide DecemberdiskTable onlinesysTimePeriodLength Appendix A Setting up the SNMP Agent A-5sysZonesPerDisk sysNumberOfBuffersA.2 Enabling Management by Solstice Domain Manager 1. Become root4. Copy smsvod.mib to $SNMHOME/agents 5. Run $SNMHOME/bin/mib2schema smsvod.mibThis command creates smsvod.mib.schema and smsvod.mib.oid Under “instance elementCommand”6. Run buildoid with no arguments A.3 Enabling Trap Handling The Sun MediaCenter software ensures delivery of media streams at the same rate at which they were recorded. The bit pump’s missing of a deadline indicates that the machine was, at least momentarily, unable to keep up with the rate of a title. This indicates a resource conﬂict on the server Creating a Content Package B.1 Content Package B.2 The TOC File A TOC ﬁle is described with the following structures B.2.1.2 version B.2.1 ContentObjectsB.2.1.1 title B.2.1.3 formatB.2.2.1 description B.2.2 BitStreamObjectsB.2.1.4 description B.2.2.2 speedB.2.2.4 indexﬁle B.2.3 DataFileObjectsB.2.2.3 bitrate B.2.2.5 indexsizeB.2.3.3 ﬁlesize B.3 Simplest Case TOC FileB.2.3.2 ﬁlepath version B.4 TOC File for Large Filestitle formatB.5 Index File Requirements B.5.1 Normal Play Time B.6.1 Tar Format B.6 Tape Storage FormatB.5.2 File Offset Appendix B Creating a Content Package B-13 FIGURE B-2 Tape Storage FormatB.7 Example B.6.2 TapesCODE EXAMPLE B-1 Example Content Package Appendix B Creating a Content Package B-15B-16 Sun MediaCenter Server Administrator’s Guide December For a ﬁle bambi.1x index ﬁle for normal-speed play B.8 References Appendix B Creating a Content Package B-19 B-20 Sun MediaCenter Server Administrator’s Guide December Glossary Glossary-1Media Stream Manager Table of Contents Glossary-3Glossary-4 Sun MediaCenter Server Administrator’s Guide December Index Page Page Page Page Index-6 Sun MediaCenter Server Administrator’s Guide December