Description of Lan-Free Client Data Transfer Operation

Technote (troubleshooting)


Problem(Abstract)

The LAN-free data transfer function effectively exploits SAN environments by moving back-end office and IT data transfers from the communications network to a data network or SAN. LAN communications bandwidth then can be used to enhance and improve service levels for end users and customers.

Resolving the problem


LAN-Free Client Data Transfer
LAN-Free Client Data Transfer Image

The LAN-free data transfer function effectively exploits SAN environments by moving back-end office and IT data transfers from the communications network to a data network or SAN. LAN communications bandwidth then can be used to enhance and improve service levels for end users and customers.

LAN-free data transfer is an extension to the LAN-free data transfer capabilities available with Tivoli Storage Manager. SANs provide an alternative path for data movement between the IBM Tivoli Storage Manager client and server. LAN-free data transfer exploits this SAN path by enabling the IBM Tivoli Storage Manager client to back up and restore data directly to and from SAN-attached storage, which is shared between the IBM Tivoli Storage Manager server and client, and managed by the server.

The existing LAN connection is used to exchange control information such as policy information and meta data about the objects being backed up, but the data movement utilizes the SAN to write directly to the storage media. Data movement is off-loaded from the LAN and from the IBM Tivoli Storage Manager server processor providing greater scalability for the server. The server can support a greater number of simultaneous client connections.

The LAN-free client will communicate with the IBM Tivoli Storage Manager server to obtain and store database information, and coordinate device and volume access of the storage managed by the server. The server will determine if the client is making a request to access storage for which the client has a SAN path defined. If there is a SAN path defined, then the data will be transferred on that path. If there is a failure when using the SAN path, the LAN-free client will recover from these errors by failing-over to a LAN connection to the IBM Tivoli Storage Manager server and proceed to move data over the LAN network.

The LAN-free data transfer will use the SAN tape library sharing and an IBM Tivoli Storage Manager server defined as the library manager. This library manager will manage the storage hierarchy and perform the server functions including storage pool migrations, reclamation, collocations, and backup-restore of storage pools and database.

ACSLS controlled libraries can be written to LAN-free by using IBM Tivoli Storage Manager with Gresham EDT-DistribuTAPE. For more information see http://www.gresham-software.com/storage/

LAN-FREE CLIENT SUPPORT
Servers
Backup-Archive Clients
Tivoli Data Protection
AIX
Solaris
Windows
HP-UX
Linux
z/OS ( see link under Related Information below for description and information about Lan-Free for z/OS ITSM Server )
AIX
Solaris
Windows
HP-UX
Linux
R3
Oracle
Domino
Informix
MS Exchange
MS SQL



TESTED COMBINATIONS FOR LAN-FREE TO SANergy MANAGED DISK STORAGE POOL
TSM server platform
SANergy MDC platform
TSM client platform
TSM Server/SANergy MDC on same machine ?
Windows
Windows
Windows
Yes
Windows
Windows
Sun
Yes
Windows
Windows
AIX
Yes
Sun
Sun
Windows
Yes
Sun
Sun
Sun
Yes
Sun
Sun
AIX
Yes
Windows
Sun
Windows
No
Windows
Sun
Sun
No
Windows
Sun
AIX
No
AIX
Sun
Windows
No


For additional information on configuring and using
Tivoli Storage Manager Lan-Free Client Data Transfer search for
Managed System for SAN Storage Agent User's Guide.

Related information

Gresham Software
Lan-Free Client Data Transfer for z/OS ITSM Server

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Document information


More support for:

Tivoli Storage Manager
Server

Software version:

All Supported Versions

Operating system(s):

Platform Independent

Reference #:

1053348

Modified date:

2007-08-06

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