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Backing Up the Linux/MF & Distributed Environments to One Place. Timothy O Brien Computer Associates International, Inc. ca.com

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(1)

Timothy O’Brien

Computer Associates International, Inc.

Backing Up the

Linux/MF &

Distributed

Environments to

One Place

(2)

Agenda

‰ Storage management challenges

unique to Linux for the zSeries

‰ Brightstor solutions for Linux for the

zSeries

‰ Options for managing physical

tapes

(3)

Architectural Challenges

ƒ Unique scale – Number of devices – Number of systems ƒ Device support – SCSI tape? ƒ Sharing and coexistence issues – z/OS tape management ? – z/VM tape management ? – Tape drive sharing? Linux LPAR, IFL, or z/VM Device Drivers

File system Layer

Applications Applications Applications Applications Applications Applications

(4)

Architectural Challenges

Backup Application Device Drivers File system Cache z/OS or z/VM Linux

ƒ Problem 1: Linux caches changed file system pages so they can’t be backed up safely from outside Linux

ƒ Problem 2: z/OS and z/VM do not understand Linux

file systems at a file level – backups and restores are

(5)

Architectural Challenges

ƒ Weak S390 tape device support provided with Linux ƒ No integration with BrightStor z/OS or z/VM tape management – CA-1 – CA-Vtape – CA-Dynam/TLMS – CA-VM:Tape – CA-Dynam/T for VM ƒ Not scalable to large numbers of Linux system images Linux tar/pax

(6)

BrightStor Enterprise

Backup

ƒ Enterprise backup and recovery tool

ƒ Full and incremental backups

ƒ Full server and selective file/directory restore

ƒ Manager-agent architecture

ƒ Administrative functions

– GUI administrative interface – Catalog and tape management

(7)

BrightStor Enterprise

Backup

(8)
(9)
(10)

Enterprise Backup

Agents

ƒ Runs on each Linux instance

– Small footprint – Scalable

– Only component needed on most systems

– Build into base Linux images

ƒ Connects to BrightStor manager on any platform

– Linux (Intel or zSeries) – Windows

– Unix

ƒ Performs physical filesystem operations

(11)

Brightstor Enterprise

Backup

Backup Agent Backup Agent Agent Backup Agent Backup Linux BrightStor Manager Networ k Networ k Linux for zSeries SCSI tape z/OS z/VM

(12)

Physical Tape Options

ƒ Non-mainframe

tape systems

ƒ Native Linux for

zSeries ƒ z/OS media server ƒ z/VM integration Linux Linux Linux Linux Linux A Enterprise Backup z/VM Nativ e Linu x

(13)

Non-Mainframe Tape

Netwo rk Linux Linux Linux Linux LPAR, IFL, VM A Enterprise Backup

UNIX, Win, etc.

Mainframe Linux agents, backed up by BrightStor Enterprise Backup (BEB) manager on another platform.

(14)

Non-Mainframe Tape

ƒ Linux for zSeries: Agent-only

ƒ Backup to remote BrightStor

Enterprise Backup manager on NT or Unix platforms

ƒ Useful for

– Existing clients

– Resource constrained S/390 sites – Inexpensive remote backup solution

for disaster recovery

– Sites with tape hardware investments on non-mainframe platforms

(15)

Native Linux zSeries

Tape

Linux Linux Linux Linux

Linux (LPAR, IFL, VM) A BEB Manager CATAPE driver 3480/3490/35 90

(16)

Native Linux zSeries

Tape

ƒ Stand-alone Linux for zSeries solution

– No other platforms required

– Supports native, LPAR, IFL, VM Linux

ƒ Dedicated tape device(s)

– VM attached or LPAR definitions

ƒ Requires CA supplied tape device driver

– High performance, low-level I/O

– Permits fine-grained control of tape device

(17)

Native Linux zSeries

Tape

ƒ CA supplied tape device driver

– ESCON/FICON 3480, 3490, 3590 devices

– Compatible devices from other vendors.

– /dev/catape/* device files

ƒ Tapes written in native BrightStor format

– Compatible with other platforms

(18)

Native Linux Tape

ƒ “tapedevinit” utility

– Installs driver (dynamically) – Specify device address range – Creates /dev/catape/* files

ƒ /dev/catape/* files

– Can be used to read/write tapes under Linux

– Not limited to BrightStor

– Ioctl() interface for low-level functions (rewind, WTM, positioning, etc.)

(19)

Native Linux Tape

ƒ Tapes managed by BrightStor

– Retention, scratching, etc.

ƒ “Unlabeled” tapes from z/OS or z/VM perspective

– Any existing tape labels are overwritten

ƒ Devices can safely be shared with z/OS or z/VM

– Single-system ASSIGN

(20)

z/VM Integration

Linux Linux Linux Linux A Enterprise Backup Manager CATAPE CP VM:Tape 3480/3490/3 590 Z/VM

(21)

z/VM Integration

Linux Linux Linux Linux A Enterprise Backup Manager CATAPE CP VM:Tape VMHSC 9310 3480/3490/3 590 Z/VM

(22)

z/VM Integration

ƒ Similar to native Linux solution, but integrated with VM tape processing

ƒ Customizable scripts at key points

– Attach/Detach tape device

– Open/Close/EOV tape volume (mount) – Scratch expired tape

(23)

z/VM Integration

Start backup Attach Tape Device Mount Scratch Tape VMTAPE MOUNT … Write Data Close Tape Detach

Tape Device CP DET…

Next volume, if any

(24)

Z/VM Integration

ƒ Retains high performance of native Linux solution

– I/O still managed by device driver – No IP transfer for ‘local’ agents

ƒ Integrates with

– Brightstor CA-VM:Tape

– Brightstor Dynam/T for VM

– Other VM tape management products

ƒ Reduces need for dedicated resources on Linux images

ƒ Support for VM-managed tape libraries and other hardware

(25)
(26)

z/OS Media Server

CA-1 VTAPE TLMS IP or Hipersockets Media Service Linux Linux Linux Linux Linux A BrightStor Enterprise Backup Manager z/OS (OS/390)

(27)

z/OS Media Server with

Storage Tek

z/OS (OS/390) CA-1 TLMS IP or Hipersockets Media Service Linux Linux Linux Linux Linux A BrightStor Enterprise Backup Manager HSC 9310

(28)

z/OS Media Server

ƒ Works in conjunction with

Enterprise Backup to enable

physical tape processing on z/OS or OS/390.

ƒ IP-based connection

– Ideal Hipersocket candidate

ƒ Standard format z/OS tapes

– Standard label, multi-volume datasets

ƒ Built-in feature available at no additional charge

(29)

z/OS Media Server

ƒ Multi-threaded single address space

ƒ Define tape devices via SVC 99 or JCL

ƒ Simple installation, setup

– APF library – VSAM file

– Tape management and security definitions

– Few parameters to adjust or monitor

ƒ Configure host name/port on Linux side

(30)

z/OS Media Server

s390tape Linux CFG OPEN Tape SL, DSN, … Deallocate Tape Device Allocate Tape Device JCL or SVC 99 Read/Write Data (EXCP) EOV/Close Tape Next volume, if any

(31)

z/OS Media Server

ƒ Enterprise Backup sees “virtual” tape devices, depending on

configuration

ƒ Devices dynamically

allocated/freed as needed (if not statically defined in JCL)

ƒ Single media server can handle multiple copies of Enterprise

Backup managers

ƒ Can mix-and-match real and z/OS tape

ƒ Efficient, low-level EXCP tape processing

(32)

z/OS Media Server

ƒ Full integration with mainframe tape products ƒ BrightStor CA-1 ƒ BrightStor CA-Dynam/TLMS Tape Management ƒ DFSMSrmm ƒ BrightStor CA-Vtape Virtual Tape System

ƒ Tape libraries and

other hardware

ƒ Required z/OS components will be packaged with CA Common

(33)

Summary

ƒ Storage management challenges unique to Linux for the zSeries

ƒ BrightStor solutions for Linux zSeries

– Interface with existing BEB manager on distributed platform

– Enterprise Backup manager on Linux Intel – Enterprise Backup manager on Linux zSeries

ƒ Options for managing physical tapes

– Native Linux tape management – z/OS media server

– z/VM integration

ƒ Share tape drives across zOS, zVM,

and Linux systems

(34)
(35)

Contact Information

Timothy O’Brien Senior Consultant CA Technology Services Computer Associates International, Inc. e-Mail: [email protected] Office Phone: 214-473-1533 Cell Phone: 972-814-7568

(36)

Timothy O’Brien

Computer Associates International,

Backing Up the

Linux/MF &

Distributed

Environments to

One Place

References

Download now ( PDF - 36 Page - 582.47 KB )

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