intelligent storage system

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Intelligent Storage Systems : 

Intelligent Storage Systems Chapter 4 Section 1 : Storage System

ISM - Course Organization : 

ISM - Course Organization

Chapter Objectives : 

Chapter Objectives After completing this module, you will be able to: Describe components of intelligent storage system List benefits of intelligent storage system Explain intelligent cache algorithms and protection Describe implementation of intelligent storage system High-end storage array Midrange storage array Click to Read EMC® Networked Storage - Topology Guide

What is an Intelligent Storage System : 

What is an Intelligent Storage System Intelligent Storage Systems are RAID arrays that are: Highly optimized for I/O processing Have large amounts of cache for improving I/O performance Have operating environments that provide: Intelligence for managing cache Array resource allocation Connectivity for heterogeneous hosts Advanced array based local and remote replication options

Benefits of an Intelligent Storage System : 

Benefits of an Intelligent Storage System Intelligent storage system provides several benefits over a collection of disks in an array (JBOD) or even a RAID arrays: Increased capacity Improved performance Easier data management Improved data availability and protection Enhanced Business Continuity support Improved security and access control

Components of an Intelligent Storage System : 

Components of an Intelligent Storage System Host Connectivity

Intelligent Storage System: Front End : 

Intelligent Storage System: Front End Host Connectivity Front End Back End Cache Physical Disks Intelligent Storage System Ports Controllers

Front End Command Queuing : 

Front End Command Queuing D C B A D C B A A B C D I/O Requests I/O Processing Order Front-End Controller Cylinders Without Optimization (FIFO) D B C A D C B A A B C D I/O Requests I/O Processing Order Front-End Controller Cylinders With command queuing

Intelligent Storage System: Cache : 

Intelligent Storage System: Cache Host Connectivity Front End Back End Cache Physical Disks Intelligent Storage System

Write Operation with Cache : 

WriteRequest Write Operation with Cache WriteRequest Write-through Cache Write-back Acknowledgement Acknowledgement Cache Cache Acknowledgement

Read Operation with Cache: ‘Hits’ and ‘Misses’ : 

ReadRequest Cache ReadRequest Cache Data found in cache = ‘Hit’ No data found = ‘Miss’ Read Operation with Cache: ‘Hits’ and ‘Misses’

Cache Management: Algorithms : 

Cache Management: Algorithms Least Recently Used (LRU) Discards least recently used data Most Recently Used (MRU) Discards most recently used data New Data Oldest Data

Cache Management: Watermarking : 

Cache Management: Watermarking LWM HWM 100 % Idle flushing High watermark flushing Forced flushing Manage peak I/O requests “bursts” through flushing/de-staging Idle flushing, High Watermark flushing and Forced flushing For maximum performance: Provide headroom in write cache for I/O bursts

Cache Data Protection : 

Cache Data Protection Protecting cache data against failure: Cache mirroring Each write to the cache is held in two different memory locations on two independent memory cards Cache vaulting Cache is exposed to the risk of uncommitted data loss due to power failure

Intelligent Storage System: Back End : 

Intelligent Storage System: Back End Host Connectivity Ports Controllers Front End Back End Cache Physical Disks Intelligent Storage System

Intelligent Storage System: Physical Disks : 

Intelligent Storage System: Physical Disks Host Connectivity Front End Back End Cache Physical Disks Intelligent Storage System

What the Host Sees – RAID Sets and LUNs : 

What the Host Sees – RAID Sets and LUNs Host 1 Host 2 Front End Back End Cache Physical Disks Intelligent Storage System Connectivity FC SAN

LUN Masking : 

LUN Masking LUN masking is access control mechanism Process of masking LUNs from unauthorized access Implemented on storage arrays Storage group logical entity that contains one or more LUNs and one host

ISS Implementation: High-end Storage Systems : 

ISS Implementation: High-end Storage Systems Also referred as Active-active arrays I/O’s are serviced through all the available path Following are high-end array capabilities: Large storage capacity Huge cache to service host I/Os Fault tolerance architecture Multiple front-end ports and support to interface protocols High scalability Ability to handle large amounts of concurrent I/Os Designed for large enterprises Host Storage Array Active-Active Configuration Active Active

Midrange Storage Systems : 

Midrange Storage Systems Also referred as Active-passive arrays Host can perform I/Os to LUNs only through active paths Other paths remain passive till active path fails Midrange array have two controllers, each with cache, RAID controllers and disks drive interfaces Designed for small and medium enterprises Less scalable as compared to high-end array Host Storage Array Active-Passive Configuration Active Passive

Chapter Summary : 

Chapter Summary Key points covered in this chapter: Intelligent Storage Systems features Components of Intelligent Storage Systems Cache management algorithms Intelligent Storage System implementation High-end storage array Mid range storage array

Concept in Practice: EMC CLARiiON : 

Concept in Practice: EMC CLARiiON Support for UltraFlex technology Scalable from up to 960 disks Supports flash drives Supports different types and sizes of drives, and RAID types (0, 1, 1+0, 3, 5, 6) Supports up to 16 GB of available cache memory per controller (Storage Processor) Enhances availability with non disruptive upgrade and failover Ensures data protection through mirrored write cache and cache vaulting Supports storage-based local and remote data replication Through SnapView and MirrorView software

2009 CLARiiON Family : 

2009 CLARiiON Family

CLARiiON CX4: The Proven Midrange Storage Solution : 

CLARiiON CX4: The Proven Midrange Storage Solution

CLARiiON CX-4 Architecture : 

CLARiiON CX-4 Architecture

Concept in Practice – CLARiiON Video : 

Concept in Practice – CLARiiON Video

EMC Symmetrix : 

EMC Symmetrix Incrementally scalable to 2,400 disks Supports Flash-based solid-state drives Dynamic global cache memory (16 GB–512 GB) Advanced processing power (up to 130 PowerPC) Direct matrix Architecture High data processing bandwidth (up to 128 GB/s) Data protection with RAID 1, 1+0 (also known as 10 for mainframe), 5, and 6 Storage-based local and remote replication Through TimeFinder and SRDF software Additional Task Research EMC Symmetrix V-Max

Direct Matrix Architecture : 

Direct Matrix Architecture

Concept in Practice – Symmetrix Video : 

Concept in Practice – Symmetrix Video Click Here

Lab - Navisphere Manager Simulator : 

Lab - Navisphere Manager Simulator Exercise 1: Logging into and Navigating Navisphere Manager Lab Exercise Exercise 2: Enable/Disable Navisphere Classic CLI and Configuring NTP Exercise 3: Storage Management - Allocating and Assigning LUNs ** Click to Open the Documents Click Here – Simulator Demo Download EMC Navisphere Manager from the student secure area

End of Section 1 - Quiz : 

End of Section 1 - Quiz Storage System Introduction to Information Storage and Management Storage System Environment Data Protection: RAID Intelligent Storage System ** Click to Open the Documents For Instructor Use Quiz – Section 1 Take the Online Assessment Section 1 Quiz

Check Your Knowledge : 

Check Your Knowledge What are the parts of an Intelligent Storage System? What are the differences between a high-end and a midrange storage array? What is the difference between a read cache hit and a read cache miss? What is the difference between Least Recently Used and Most Recently Used algorithms? What is the difference between Write-through and Write-back cache?  Additional Task Research more on EMC Arrays

External Links : 

External Links EMC Clariion Family Combine midrange networked storage with innovative technology and robust software capabilities to manage and consolidate your data. http://www.emc.com/products/family/celerra-family.htm EMC Symmetrix Family Featuring new EMC Symmetrix V-Max, which leverages the EMC Symmetrix Virtual Matrix Architecture to deliver unprecedented levels of scalability and efficiency. http://www.emc.com/products/family/symmetrix-family.htm

For your Reading on www.emc.com : 

For your Reading on www.emc.com Gain Access to EMC Publications namely ON Magazine & EMC.now Magazine Visit : http://www.emc.com/on

Slide 35: 

Joseph M. Tucci Chairman, President, & CEOEMC Corporation Keynote Address Watch the Full Keynote Address on www.emcworld.com/keynotes.htm or www.youtube.com/EMCCorp Next Event Additional Information Watch the 2009 Keynote Click to View the Presentation

Additional Information : 

Additional Information Customer Showcase Fundamentals Demo Best Practices Product Showcase Tech Deep dives Tech Trends Attend Free Webinars on http://www.emc.com/events/ondemand-events.esp www.youtube.com/PointBB www.youtube.com/EMCCorp More Videos on

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