Implementing Tivoli Storage Manager on Linux on System z

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Implementing Tivoli Storage Manager

on Linux on System z

Laura Knapp

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IBM Software Group | Tivoli software

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Agenda

Why use Linux on System z for TSM

TSM – Some basics

TSM Server on Linux

Ź Hardware and Software requirements Ź Configuration and Device Support

Ź Converting to TSM on Linux on System z

TSM Clients on Linux

Ź Backup/Archive Client Ź Data Protection Clients Ź Storage Agent (LANFree)

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Why Use Linux on System z for TSM

Already invested in Mainframe

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Converting from OEM product

Convert from TSM on z/OS

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Saves on licensing costs

Convert from ADSM on z/VM

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Need latest function of TSM server

Implementing a Big Application on Linux

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IBM Software Group

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Data Protection on Linux for System z

Tivoli Storage Manager for Mail

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Data Protection for Lotus Domino

Data Protection for Oracle

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Data Protection for Oracle on Linux for S/390

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Data Protection for Oracle on Linux for zSeries 64-bit

DB2

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Interfaces directly to TSM API

IBM Tivoli Storage Manager for Application Servers

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IBM Software Group

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IBM Tivoli Storage Manager for Linux on System z

Server Requirements

Hardware

Ź A zSeries 900 or 800 server Ź 64-bit is required for TSM V5.3

Operating System

Ź Red Hat Enterprise Linux 4

Ź SUSE Linux Enterprise Server 9

Ź SUSE Linux Enterprise Server 8 / UnitedLinux 1.0 Ź 64-bit for TSM V5.3 and higher

Communications

Ź TCP/IP

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TSM Server on Linux on System z

All TSM server functions available

Environments

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IFL (Integrated Facility for Linux)

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LPAR

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z/VM

Memory

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TSM uses minimal main memory

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FIlesystem cache can take memory without “directio”

• TSM V5.3 uses “directio” for disk storage pools

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z/VM – Why and Why Not

Pro’s

Ź Resource Management Ź Multiple guest

Ź Better test environment

Con’s

Ź Overhead (generally 5 to 10 percent)

Ź One more level of OS to learn and manage

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Disk - Tivoli Storage Manage Server for Linux on System z

Disk Support

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Filesystem volumes – no rlv support

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ext3 or reiserfs

• Both support “directio”

• JFS works but does not support “directio”

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SCSI or ECKD attached

Disk Subsystem Considerations

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Same concerns as on other platforms

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Minimize contention within TSM and with other uses

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Tape - Tivoli Storage Manager for Linux on System z

Attachment

Ź TSM “owns” library, drives, and inventory Ź Uses SCSI protocol to drives

Ź Native FCP/SCSI only

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Available only on z800/z900

Ź No Channel or ESCON/FICON attached tape support

Library Sharing Capable

LANFree Capable

Support for ACSLS

Ź With or without Gresham EDT

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Linux Support for IBM and ITSM Device Drivers

IBM TotalStorage device drivers for IBM tape drives and

libraries

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IBM drivers are linked to specific Kernel Levels

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Several versions on the tape website

ITSM device drivers for non-IBM tape drives and libraries

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In V5.3 TSMSCSI uses Linux “pass-thru” driver

• Linux SCSI generic driver (sg)

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“pass-thru” driver is open source

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Networking on System z

TSM Storage Pools TSM Database

TCP/IP TCP/IP TCP/IP

TSM Server TSM Client DB2 w/ TSM API

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Export / Import with Tape

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Export / Import with Server-to-Server

TCP/IP TCP/IP TCP/IP

ADSM Server TSM Server

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Converting to TSM Server on Linux on System z

New server

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Create new nodes on new server

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Perform “full” incremental backups with new nodes

Export / import

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Tape

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Server-to-server

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Both z/VM and z/OS support export using both methods

Combination of the above

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Importing to TSM Server on Linux on System z

with Server-to-Server - Requirements

TSM on z/OS

Ź Version 5.2 and higher

ADSM on z/VM

Ź Service level 3.1.2.110

Function

Ź Direct server export to server import over the TCP/IP

Ź To a server of the same or different platform

Ź Merge imported data into existing client file spaces

Ź Incrementally export client file data based on a date/time specification

Ź Commands:

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EXPORT SERVER

•

EXPORT NODE

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EXPORT POLICY

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IBM Software Group

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Linux Clients on System z

Backup / Archive client

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File and Directory level backup

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Image backup

API

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Data Protection for … mentioned previously

LANFree Storage Agent

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LANFree on Linux

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Server supports LANFree with other platforms

ISC runs on Linux

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BA Client Components

Backup-archive client (command line)

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No GUI

Administrative client (command line)

Tivoli Storage Manager API (32-bit and 64-bit)

Web backup-archive client

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Backup and Restore without logging on to Linux

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Client Requirements

Hardware requirements

Ź A 9672 G5 or G6, Multiprise 3000, or zSeries 800 or 900 (31-bit and

64-bit mode)

Ź Disk space: see the README file that is shipped on the product

installation media.

Ź Memory: 128 MB

Ź A minimum screen resolution of 800 by 600 pixels is required to display

the Tivoli Storage Manager Backup-Archive Client Web GUI.

Software requirements

Ź The backup-archive client requires the following software to run: Ź SUSE SLES 8 and 9 for System z

Ź Red Hat Enterprise Linux 3.0

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Client Functional Support

Filesystems Support

Ź ext2 Ź ext3 Ź reiserfs

Ź Other filesystems can be supported through virtualmountpoints

•

Limited support - only available if the file system itself supports some basic POSIX system calls, such as read() or write()

Image Backup

Ź Linux Logical Volume Manager

•

/dev/vg00/lv01

Ź Raw Disk

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Tivoli Storage Manager for Application Servers

Works with Websphere Application Server on Linux

Online Backup/Restore

Ź Hot Backup - No server shutdown Ź WebSphere administration database

Ź All linked WebSphere Application Servers

Fully Automated Backup Process

Ź Automatic detection of linked WebSphere Application Servers Ź Manual interventions are no longer required

Data Integrity

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Tivoli Storage Manager for Mail

TDP for Lotus Domino

Successor product to TDP for Lotus Notes

Takes advantage of significant new features in Lotus Domino R5

Ź Backup and restore API interface

Ź Transaction logging

Online backup of Domino databases with full integrity

Incremental backup through archive of transaction logs

Ź Can use a conditional archive to ensure log space doesn’t fill

Expiration of Domino databases via TSM policy definitions

Expiration of transaction logs via TDP command

Integrated database restore and apply of transaction logs

Point in time restore with apply of transaction log

Restore to same or different Domino server

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Tivoli Storage Manager for Databases

TDP for Oracle

Full or Incremental backup either on-line or off-line

Backup of Redo Logs

Restore of Tablespace or Datafile while on-line

Backups/Restores are performed via Recovery Manager (RMAN)

Ź RMAN is an Oracle Utility

Ź Most RMAN functionality supported by TDP for Oracle Ź Duplex copies of backups via RMAN

New option file (tdpo.opt) used to configure TDP for Oracle

Ź Filespace name

Ź TSM configuration and log files Ź Management class

Oracle release 8i - single or Oracle Parallel Server 9i - single or Real Application Cluster

SuSE SLES 7 or SLES 8 (UL 1.0) with Oracle 9.2.0 (32-bit)

Lan-Free support is available with SuSE 8 with IBM Tivoli Storage Manager API 5.2.0 or later.

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Tivoli Storage Manager for Databases

DB2

DB2 V 8.x (and higher) includes the backup interface to TSM

Built into DB2, no Data Protection agent to purchase or install

On-line backup for databases

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TSM Storage Agent on Linux

Requirements same as TSM

server

Storage Agent attaches to a

tape library “shared” with a

TSM server

Server “assigns” a drive and

volume to storage agent

Storage agent:

Ź Writes directly to tape

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Via the SAN

Ź Informs server what was done

•

Via the network

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ISC / AdminCenter on Linux

Task-oriented interface with wizards to simplify tasks such as

scheduling, managing server maintenance operations and

configuring devices

Built on the Integrated Solutions Console and Websphere

Multiple TSM Servers can be managed by multiple administrators

concurrently via web browsers

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IBM Software Group

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TSM and Disk I/O

Database

Ź Read and Write

Ź Average about 4KB per read or write Ź Random access pattern

Ź Performance important for small files

Recovery Log

Ź Write only

Storage Pools

Ź Heavy Write during backup / heavy read during housekeeping Ź 256KB writes

Ź Sequential access pattern

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Review of Performance

Many factors influence Performance

Avoid Contention

Ź CPU

Ź Disk configuration

Ź TSM DB and Storage Pools should be isolated from each other

Native SCSI disk outperforms ECKD disk

Ź But use more processor power

reiserfs uses more processor

Ź Little difference in throughput (depending on workload)

Combination of ext3 / sequential disk appears best

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Summary

Full function TSM Server

Ź Hierarchical Storage Pool Architecture Ź Tape Reclamation and Collocation Ź LANFree / Library Sharing

Ź Disaster Recovery Manager Ź Export / Import <=> TSM server

Full range of TSM clients

Ź Backup/Recovery Ź Archive/Retrieve Ź Backup/Archive API Ź Data Protection for ...

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Resources

Yahoo Group Teamrooms groups.yahoo.com

Tivoli software homepage -- http://www-3.ibm.com/software/tivoli/

Tivoli UserGroups

–http://www-3.ibm.com/software/sysmgmt/products/support/Tivoli_User_Groups.html

Tivoli Customer Portal --https://www6.software.ibm.com/reg/tivoli/custport-I

Tivoli Education -- http://www-3.ibm.com/software/tivoli/education

Tivoli Software Events -- http://www-3.ibm.com/software/tivoli/news/events/

Tivoli Best Practices --

http://www-3.ibm.com/software/tivoli/features/oct2002/best.html

IBM Link - http://www.ibmlink.ibm.com/.

IBM Manuals

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Implementing Tivoli Storage Manager on Linux on System z