Sun Microsystems 3 manual Sdbc

Page 16

NSCTL - Network storage control module

Primary host

Application	User
Sun STE or SV	Kernel
	Kernel
Sun SNDR	IP
	IP
Sun StorEdge
Instant Image
SDBC
Device driver
Hardware

Secondary host

		User
	Sun STE or SV	Kernel
		Kernel
	Sun SNDR
	Sun StorEdge
	Instant Image
	SDBC
		NSCTL -
	Device driver	Network storage
	Device driver	control module
		control module
	Hardware

FIGURE 1 The Sun SNDR Software Architecture

6 Sun StorEdge Network Data Replicator 3.0 Configuration Guide • June 2001

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Contents Sun StorEdge Network Data Replicator Configuration Guide Please Recycle Contents Page Preface Before You Read This BookUsing Unix Commands Documentation ConventionsShell Prompts Related DocumentationApplication Title Part Number Ordering Sun Documentation Accessing Sun Documentation OnlineSun Welcomes Your Comments Page Overview Sun Sndr Software DescriptionPage Supported Hardware and Software TCP/IP Connection Hardware ComponentsNetwork Multipathing Applications ArchitectureSdbc Configuration Considerations Volumes Eligible for ReplicationBitmap Volumes for Scoreboard Logs Choosing Volume Level ProtectionChoosing a Connection Medium to Link My Sites ATM Link AdvantagesConfiguring Redundant Links Between Sites Link SecurityChoosing Between Synchronous and Asynchronous Replication When To Suspend Replication to the Secondary Site Configuring The Sun Sndr Software for Mutual ReplicationOrder-Dependent Writes and Volume Set Grouping SyncRecovering the Primary or Secondary Site Recovery ConsiderationsFailing Over to the Secondary Site Choosing the Resynchronization Type Update or Full Using The Sun Sndr and Sun StorEdge Instant Image Software Sun Sndr Software and Sun StorEdge Fast Write Cache Software One-to-Many and Multihop Volume Sets Dev/rdsk/c0t0d0s9Using The Sun Sndr Software in a Firewall Environment

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