Advantages of Mainframe Replication With Hitachi VSP

MAINFRAME STORAGE REPLICATION

JOE AMATO, HDS PRODUCT MANAGER FOR REMOTE REPLICATION PRODUCTS MARK DETRICK, BROCADE GLOBAL SOLUTIONS ARCHITECT FOR RDR

SEPTEMBER 19, 2012

WEBTECH EDUCATIONAL SERIES

Mainframe Storage Replication

In this session, learn how the Hitachi Virtual Storage Platform's mainframe

replication capabilities can address your business continuity and disaster recovery

requirements. Also, learn how Brocade switches and directors complement HDS

mainframe replication capabilities and add value to HDS solutions.

Specific Learning Objectives - By attending this webcast, you’ll learn:

1. Trends that are driving changes to business continuity requirements, and how

HDS replication products such as Universal Replicator and Hyperswap

integration capabilities with Business Continuity Manager are best positioned to

address them.

2. Examples of how companies have implemented complete HDS solutions to

solve their mainframe BC/DR needs.

3. The key features and functions of Brocade FCIP switches and

fibrechannel/FICON director inter-datacenter connectivity that provide

additional value to HDS replication solutions.

UPCOMING WEBTECHS

Mainframe Series

Why Networked FICON Storage Is Better than Direct-attached

Storage, Oct 3, 9 a.m. PT, 12 p.m. ET

Other

Storage Analytics, Sept 20, 9 a.m. PT, 12 p.m. ET

Maximize Availability and Uptime by Clustering your Physical

Datacenters within Metro Distances, Oct 24, 9 a.m. PT, 12 p.m. ET

Check www.hds.com/webtech for

Links to the recording, the presentation and Q&A (available next week)

Schedule and registration for upcoming WebTech sessions

AGENDA

Introduction

HDS mainframe replication portfolio

Key HDS solution highlights

Customer case studies

Brocade FCIP switches and key features for replication

Summary and Q&A

KEY TREND: SHRINKING RTO FOR TIER-1 APPLICATIONS

Source: Enterprise Strategy Group, 2008 & 2010

Percent of ‘Enterprise’ companies (> 1000 employees)

with minimum RTO for most-critical applications

BUSINESS CONTINUITY & DATA PROTECTION ALIGNING RECOVERY OBJECTIVES AND ARCHITECTURES

Operational Recovery

Local replication ‘crash

consistent’ copies

(clones/snapshots)

Application aware copies

Backup/Restore

Disaster Recovery

Remote replication clones w/

‘crash consistent’

clones/snapshots

Application aware copies

Backup/Restore

Regulatory Compliance

Replicated Archive

Solution Architectures

Operational Resilience

Server/Storage Clusters w/

Synchronous Replication

3rd Site Primary Site Alternate Site

RTO RPO Tier-1

Tier-n

Recovery Objectives

Zero Zero

Mins-to-

Hrs

Secs-to-

Mins

Hrs-to-

Days Hrs-to-

Days

3DC

Sync-Async

Dual-Async

Multi-target

Delta-

Resync

Cascade

Data Center

Relocation

Less Resiliency More Resiliency

BUSINESS CONTINUITY – MAINFRAME PORTFOLIO

In-System Replication

Solutions

Remote Replication

Solutions

Replication

Management Solutions

In-System Replication

Solutions

Remote Replication

Solutions

Replication Management

Solutions

Hitachi ShadowImage®

Replication

For full-volume clones of business

data with consistency

(ATTIME split with HUR)

Hitachi TrueCopy®

Synchronous, consistent clones at

remote location up to 300km (~180

miles)

Business Continuity Manager

Replication management in z/OS

environments

Hitachi Compatible Mirroring for

IBM® FlashCopy®

Point-in-time volumes and datasets

via IBM command set in z/OS

environment

Hitachi Universal Replicator (HUR)

Any distance, unique use of “pull”

technology and journal volumes to

accommodate link outages or

interruptions

Hitachi Replication Manager with

mainframe

BCM plus “enterprise-wide” GUI replication

management and monitoring for mainframe

and open systems

Hitachi Compatible Software for

IBM® FlashCopy® SE

PiT volumes with virtual volume

pools versus whole volumes as

targets

Hitachi Compatible Replication for

IBM® XRC®

Asynchronous remote replication via

compatible with IBM XRC in z/OS

environment

z/OS Basic HyperSwap, GDPS HyperSwap

certification and/or integration

High-availability storage for z/OS

environments

Replication assessment, migration and implementation services

Best-practice designs that ensure results and lower risks in implementation

Replication scorecard (health check) services

Periodic checkups that ensure continued solution value

TRUECOPY REMOTE REPLICATION (SYNCHRONOUS)

(1) Host write

(4) Write complete

(2) Synchronous remote copy

(3) Remote copy complete

PVOL SVOL

Previously 2 Round-trips

Now, 1 Round trip!

• Zero Data Loss possible with Fence-level = Data

• Performance: “dual-write” plus one (1) round-trip latency and a little “overhead”

• Up to 300 km supported – A couple of customers with up to ~ 140 km

• Consistency groups supported for open and mainframe

• Consistency groups supported across open and mainframe

• zOS support is PPRC command compatible

HITACHI UNIVERSAL REPLICATOR HIGHLIGHTS

Hitachi Universal Replicator and Data Resilience

‒ Protects production performance during replication anomalies

‒ Protects Recovery Point Objective (RPO) with replication resilience during replication anomalies

‒ Leverages HDS virtualization for lower-cost BC/DR solutions

‒ Can enable reductions in bandwidth requirements

Key Features

‒ Asynchronous replication of customer’s data

‒ Unique cache and disk based journaling

‒ Unique pull technology to move data to target storage system

‒ Multi-volume and multi-storage-system consistency groups

‒ Consistency across mainframe and open systems supported

‒ Thin (dynamic) provisioning awareness

‒ Advanced configuration support (e.g., 3DC, 4DC, delta-resync)

RPO ESTIMATE WITH LESS THAN PEAK BANDWIDTH

Journal (HUR) vs. Cache (Bitmap) RPO Recovery

Bitmap RPO

HUR RETURN TO NORMAL OPERATION: DISK JOURNALS AVOID SUSPEND IMPACTS TO RPO

* Modeled data only O

uta

ge

Rep

aire

d

No suspend,

decreasing RPO

Suspend,

increasing

RPO

THREE DATA CENTER REPLICATION SOLUTIONS

TrueCopy S-VOL shared as HUR P-VOL in intermediate site

Primary volume is shared P-VOL for two remote systems

VSP

HUR

JNL Group

P-VOL

VSP

S-VOL P-VOL

JNL-VOL TrueCopy

(Sync)

3DC Cascade*

S-VOL

VSP

JNL-VOL

JNL Group

VSP

JNL-VOL

HUR

JNL-VOL

Journal Group

P-VOL

TrueCopy (Sync) or HUR*

3DC Multi-Target

S-VOL

VSP

JNL-VOL

JNL Group

Optional Delta Resync

VSP

S-VOL S-VOL

VSP

JNL-VOL

JNL Group

* 3DC with two HUR (async) links, without Delta-Resync, is currently supported on

VSP platforms only in both cascade and multi-target 1x1x1 configurations.

Mainframe supports up to 12x12x12 controller configurations (4x4x4 cascade)

Requires Disaster Recovery Extended and BCM Extended

HUR INTEGRATION WITH HYPERSWAP HIGH-AVAILABILITY WITH DISASTER RECOVERY

TrueCopy Duplex

HUR

Duplex Delta Pairs

Hold

X

HyperSwap

Delta

Pairs

Hold

HUR

Duplex

BCM detects HyperSwap

via system messages and

drives automated change

of HUR states

MAINFRAME REPLICATION MANAGEMENT “REFRESHER”

Hitachi - IBM Compatibility

‒ Hitachi storage has essential compatibility with IBM z/OS

‒ IBM replication management compatibility

‒ Hitachi storage controllers support PPRC, XRC and FlashCopy commands (assuming applicable software licensing) without additional HDS-provided software

‒ TrueCopy synchronous is compatible with PPRC

‒ For full-volumes, IBM commands operate on individual replication pairs

‒ But, IBM commands do not support Hitachi Universal Replicator

Hitachi Business Continuity Manager (BCM) value-add

‒ Reduce complexity, simplify management

‒ Provide enhanced control and visibility

‒ (e.g., support configured and unconfigured devices)

‒ Reduce risk

Automatically discovers Hitachi storage systems and internal

copy volumes

Uses a single command to manage groups of copy volumes

with common attributes

Receives auto notification of key copy “state transitions”

Supports advanced TrueCopy, ShadowImage and Universal

Replicator features

Real-time view of Universal Replicator

Single, consistent interface based on Time Sharing Options

(TSO) / Interactive System Productivity Facility (ISPF)

Standard REXX scripting to customize and automate

Optional Integration with Replication Manager for combined

mainframe and open systems replication management

BUSINESS CONTINUITY MANAGER™ HIGHLIGHTS

CUSTOMER CASE: INSURANCE COMPANY (VIRTUALIZATION & REPLICATION FOR MAINFRAME AND OPEN SYSTEMS)

Customer originally implemented on USPV and is now moving to VSP!

Case study available on SHARE Proceedings - Anaheim 2011

Production Site Recovery Site

CUSTOMER CASE: LARGE FINANCIAL INSTITUTION (MULTI-CONTROLLER CONSISTENCY/HUR AND SHADOWIMAGE)

Converted from XRC!

Case study available on SHARE Proceedings – San Jose 2008

Much larger configuration today!

PRODUCTION PRODUCTION PRODUCTION

Dual OC-192

M

I

R

R

O

R

E

D

D

A

T

A

Fiber Channel connections between

control units

Primary DASD

Production Site Recovery Site

Secondary DASD Tertiary DASD

Monitoring/Management

Extraordinary Extension Brocade

Brocade 7800 & FX - Brocade CONFIDENTIAL 18 March 2012

Next-Generation Extension Products

March 2012 Brocade 7800 & FX - Brocade CONFIDENTIAL 19

High-touch services, product flexibility, scalability

So

luti

on

pri

ce

ra

nge

(h

ard

wa

re a

nd

so

ftw

are

) Global 1000/

Large Enterprise

Director-Class Standalone

7800 Base

Small/Medium

Business

SMB/Enterprise

Brocade 7800 +

PoD license

FX8-24 blade for

Brocade DCX 8510

DCX 8510-4

DCX 8510-8

FX base

GE - 10 Gbps

FX 10GE license

10GE - 20 Gbps

Brocade Network Advisor

Remote Data Replication over IP Networks

Business Challenge

• Create nonstop IT operations for business continuance

• Application failover and data access

Solution

• Leverage secondary site for failover

• Deploy direct-connected FX8-24 Extension Blades over MLX IP network

• Provide protected data, very small RPO and RTO


Disk Array

with RDR

Mainframe

and/or

Open

Systems

IP WAN

Mainframe

and/or

Open

Systems

Disk Array

with RDR

Brocade DCX

FX8-24 Extension Blades Brocade DCX

FX8-24 Extension Blades

Secondary

Data Center

Primary

Data Center

FICON

FC

MLXe

L2/L3 Switch

MLXe

L2/L3 Switch

Arrays replicate data between each other using FC

Brocade Extension Solutions

Accelerates and optimizes replication, backup, and migration over any distance using advanced Fibre Channel and FCIP networking technology

• FCIP Trunking creates an ISL spanning multiple physical ports for load balancing and network failure resiliency

• ARL dynamically adjusts bandwidth limits to ensure efficient utilization and sharing of available bandwidth

• PP-TCP-QoS prioritizes handling of initiator-target flows within an FCIP tunnel to optimize bandwidth and performance by application

• Advanced Compression architecture provides flexibility to optimize compression ratios and maximize throughput

• 200 ms Round-Trip Time (RTT) of latency supports distances approaching 17,500 kilometers (nearly 11,000 miles)

• Brocade Network Advisor FCIP management unifies management of Fibre Channel and FCIP network infrastructures

Features Introduced with 7800/FX


Brocade 7800

Channel Extender

Brocade FX8-24 Extension

Blade for the Brocade

DCX 8510

Brocade FX8-24 Extension Blade

• Brocade FX8-24 Extension Blade

• Twelve 8G FC ports, ten GE interfaces

• Functionality enabled through optional licenses

• 10GE Interfaces

• Enables 10GE interfaces and doubles FCIP bandwidth to 20 Gbps

• Supported 10GE interface configurations

• Ten GE and one 10GE or

• Two 10GE

• Advanced Extension: FCIP Trunking and ARL

• Adaptive Networking: Activates FC and FCIP QoS functionality

• Enterprise Bundle: Advanced Performance Monitoring, Adaptive Networking, Fabric Watch, Brocade Trunking, and Server Application Optimization (SAO)

• Advanced Accelerator for FICON: Enables high-performance FICON tape, XRC, and Teradata over distance

• FICON Management Server: Control Unit Port (CUP) enables host control of switches in mainframe environments

Blade Options


Twelve 8 Gbps FC or FICON ports

Ten GE FCIP

interfaces

Two 10GE FCIP

interfaces

Brocade 7800 Extension Switch

• Two models

• Brocade 7800 4/2: Four 8G FC ports, two GE interfaces

• Brocade 7800 16/6: Sixteen 8G FC ports, six GE interfaces

• Functionality enabled through optional licenses

• Brocade 7800 16/6 Upgrade License: Enables all ports and OSTP

• Advanced Extension: FCIP Trunking and ARL

• Adaptive Networking: FC and FCIP QoS functionality

• Enterprise Bundle: Advanced Performance Monitoring, Adaptive Networking, Fabric Watch, Brocade Trunking, and SAO

• FICON Management Server: CUP enables host control of switches in mainframe environments

• Advanced Accelerator for FICON: Enables high-performance FICON tape and replication over distance

Platform Options


Brocade Network Advisor


FCIP Trunking

• Is an FCIP Tunnel with more than 1 circuit

• FCIP Trunking provides

• Single logical ISL in routing table as a single link, ULP see single link

• Bandwidth Aggregation of each circuit

• Load Balancing per batch across circuits

• Failover to remaining circuits

• Lossless Link Loss (LLL)

• Data in-flight is not lost when a link goes down, will be retransmitted same as with TCP

• In-Order-Delivery (IOD) Does not require IOD to be enabled

• Data in-flight will be delivered in the correct order, even after data lost in-flight

• Works with both FICON and FC

• Supports FastWrite, OSTP, and FICON emulation over multiple circuits

• FCIP Trunking is a proven technology

• Leveraged from widely deployed McDATA/CNT technology

Brocade exclusive feature


VE_Port to VE_Port (Dedicated Ethernet Ports)


VE_Port 16

FCIP

Trunk1

Logical

Source IP

Interfaces

Logical

Destination IP

Interfaces

Physical

Ethernet

Interfaces

VE_Port 16

FCIP

Trunk 1

Physical

Ethernet

Interfaces

Circuits Circuits

VE_Port FCIP Trunk IP Interface Circuit Ethernet Interface

Unique IP Address

Unique IP Address

Unique IP Address

Unique IP Address

GE0

GE1

GE2

GE3

GE0

GE1

GE2

GE3

GE4

GE5

Unique IP Address

Unique IP Address

GE4

GE5

WAN

IP Cloud

• FCIP Trunks (multiple circuits) or Tunnels (single circuit) are logical entities

• IP interfaces are logical entities

• Circuits and Ethernet interfaces are physical entities

FCIP Trunking Concept

Supervisor TCP Session • Encapsulates the circuits’ TCP sessions within a FCIP Trunk

• Provides granular load-balancing

• Retransmits lost frames due to circuit loss • For operational links, the TCP sessions within the circuit handle loss

• Ensures FC frames are delivered in order (IOD)

• Prevents IFCC on the mainframe

• Supports FastWrite, OSTP, and FICON emulation

• FCIP Trunk appears as a single logical ISL

L3 Lossless Link Loss (LLL)


1 3

4

X X X Circuit 1 with TCP session

Circuit 2 with TCP session

FCIP

Batches FCIP

Batches 3?

Supervisor TCP Session Data Received

3

FICON Emulation

FastWrite

OSTP

FICON Emulation

FastWrite

OSTP

2

Adaptive Rate Limiting High Availability Architecture


Channel Extender A1

Channel Extender A2

Channel Extender B1

Channel Extender B2

RDR Application

ARL

Min ½ OC-12

Max OC-12

ARL

Min ½ OC-12

Max OC-12

IP Network OC-12

½ OC-12 = 311 Mbps

Site A Site B

Fully Utilized

Normal Operation

• Link BW Number of Interfaces = BW of interface

• Not oversubscribed or underutilized

• Rate Limiting automatically changes with device or link failures

•Optics, smashed cables, FW upgrades, configuration

errors, defects…

Offline Path Operation

• Link BW Number of Remaining Interfaces = new

BW of interface

• Not oversubscribed or underutilized

• Applies to the entire path from end device to end

device

ARL

Not Operating

ARL

Operating at OC-12

50%

50% 100%

ARL

Operating at ½ OC-12

ARL

Operating at ½ OC-12

ARL Optimization after a path failure


0

1000000

2000000

3000000

4000000

5000000

6000000

7000000

8000000

9000000

0 50000 100000 150000 200000 250000 300000 350000

With one interface online,

all available bandwidth is

consumed up to the

maximum rate

When a second interface is enabled, the

network experiences a congestion event and the

first interface drops its rate down to the

minimum configured rate. From here it will seek

the ceiling again

The second interface starts

off by claiming its minimum

configured rate

Offline equipment/link

results in available BW

This interface ramps up to fully

utilize the available WAN BW. It

stops seeking a ceiling at the

maximum configured rate


FC ISL

Virtual

Channels

PP-TCP-QoS

FCIP Circuit FCIP Tunnel

TCP Sessions

DCX

QOSH_<zone name>

High Priority

QOSL_<zone name>

Low Priority

7800

7800

FC ASIC will put

traffic into

priority VC

7800/FX will

map VCs into

PP-TCP-QoS

IPsec

• There is no license for IPsec

• It is included in the base unit

• It adds only 5 µs of latency

• It operates at line rate

• All it costs is the effort to configure

• Uses PSK (Pre-Shared Keys)


Typical Four-Brocade 7800 Solution

• Solution: •2 FCIP Trunks

•1 FCIP Trunk per 7800 • 2 circuits in each trunk

•Array sees 2 parallel paths

• ARL used on all 4 circuits •Max is link BW or interface line rate, whichever is smaller

•In this example: Min = Max 4 March 2012 Brocade 7800 & FX - Brocade CONFIDENTIAL 32

FC path A

FC path B

FC path A

FC path B

7800 4/2

7800 4/2

IP WAN Link

GE FCIP

GE FCIP

GE FCIP

GE FCIP Service Provider

(Possibly carrier Ethernet)

7800 4/2

7800 4/2

MLX Core

MLX Core

MLX Core

MLX Core

High-Availability Design

• Four Brocade 7800/FX

• Two IP Networks

• Most RDR applications load-balance across multiple paths

• Most RDR applications will fail over to the remaining paths

• Supports FastWrite, OSTP, and FICON Emulation

Multiple paths


FCIP

FCIP

Storage

Local

Storage

Remote

7800

7800

7800

7800

Fabric 1A

Fabric 1B

Fabric 2A

Fabric 2B

WAN A

WAN B

SUMMARY

Final thoughts

‒ HDS is rooted-in and committed-to strong IBM compatibility

‒ HDS has complete replication solution portfolio for mainframe storage

‒ HUR is mature product (2004) with over 250 worldwide mainframe replication customers; and is on third generation of hardware platform support

‒ HDS storage provides one platform for virtualization, dynamic (thin) provisioning, and tiered storage management

‒ Brocade provides value-add to HDS replication solutions

Benefits: ‒ Deliver SLAs that are better aligned with business objectives

‒ Reduced risk via proven, enterprise-class data protection

‒ Cost savings through:

‒ Best of breed asynchronous replication

‒ Seamless tiered storage management

‒ Protection of existing investments with external virtualization

‒ Dynamic provisioning and tier-ing for mainframe

QUESTIONS AND DISCUSSION

UPCOMING WEBTECHS

Mainframe Series

Why Networked FICON Storage Is Better than Direct-attached

Storage, Oct 3, 9 a.m. PT, 12 p.m. ET

Other

Storage Analytics, Sept 20, 9 a.m. PT, 12 p.m. ET

Maximize Availability and Uptime by Clustering your Physical

Datacenters within Metro Distances, Oct 24, 9 a.m. PT, 12 p.m. ET

Check www.hds.com/webtech for

Links to the recording, the presentation and Q&A (available next week)

Schedule and registration for upcoming WebTech sessions

THANK YOU

Technology

Advantages of Mainframe Replication With Hitachi VSP