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Fault Tolerant Servers and Disaster Recovery

Product ManagementNEC Solutions America

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Outline

• What is the Fault Tolerance?

• 5 Customer Benefits of FT – 99.999% Uptime– Ease of Maintenance– Standard Software– Remote Management– Beats the TCO of Clusters

• How to Compete with Clusters

• Disaster Recovery Solution– Benefits– Failover/Failback

• Review Benefits

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What is Fault Tolerance?

99.999%Fault TolerantContinuous Availability (CA)

5 Minutes None

ClusterHigh Availability (HA)

99.9% 8 Hours45 Minutes

Business InterruptionLost Transaction

Stand Alone GP or BladeServer w/RAID

99.5% 43 Hours23 Minutes Tomorrow is O.K.

Availability Average Annual Downtime

User Tolerance toDowntime

72% of mission critical applications experience nine hours of outage per year.- Standish Group Research

Source: IDC

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FT Server – Customer Advantages

• 0 Downtime hardware - total hardware redundancy

• Ease of maintenance - modular design

• Runs standard software - no modifications to OS or apps

• Lights out computing – complete remote management

• Lower Total Cost of Ownership - beats clusters

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Fault-tolerant systemFault-tolerant system

Benefit #1 – 99.999% Uptime

DiskDiskCPUCPUCPU

I/O-PCI

Chipset CPU

MemoryConventional systemConventional system

Zero switchover timeZero switchover timeNo single point of failureNo single point of failure

Power

DiskDiskDiskDisk

DiskDisk

CPUCPUCPUCPU

MemoryFaultFault

DetectionDetection ChipsetProcessing Subsystem AProcessing Subsystem A

Module A

Module A

I/O Subsystem AI/O Subsystem A

FaultFaultDetectionDetection

I/O-PCI

DiskDiskDiskDisk

DiskDiskCPUCPUCPUCPU

MemoryFaultFault

DetectionDetection ChipsetProcessing Subsystem BProcessing Subsystem B

Module B

Module B

I/O Subsystem BI/O Subsystem B

FaultFaultDetectionDetection

I/O-PCI

Red

unda

nt P

ower

Red

unda

nt P

ower

Mirr

or

CPU

Lockstep

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Benefit #2 - Ease of Maintenance

Designed for Simplified Service (Customer Replaceable Units (CRU))

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Benefit #3 - Runs Out-of-the-Box Applications with FT Software Capabilities

NEC FT can provide fault tolerant availability to any “straight out of the box” application!

• FT uses standard operating system:– Windows Server 2003 Enterprise Edition

• Requires only one copy of any application

• Applications need not be “cluster aware” or Enterprise version

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OS/Application Monitoring & Recovery

ExpressCluster SRE

Monitors and Restores Server Functionality

Windows OS - Monitors the Windows Operating System resources and drivers; reboots the server if failure is detected

Applications - Monitors the application processes; restarts failed applications. Optionally reboots the server if applications are not restarted after pre-set number of retries

Application Application

ExpressClusterSelf Recovery Edition

Windows 2003

= restart

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What is Active Upgrade?

• An advanced method of performing software maintenance by using the system architecture of the FT Series Servers.

• Provides the ability to perform software maintenance without requiring a reboot of the operating system:

– Windows Hot-fixes & Security Patches

– Service Packs

– System Software upgrades from NEC

– Applications (dependant upon characteristics)

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How does Active Upgrade work?

Concept Overview:• Mission critical applications run at 100% on side A.• Upgrades performed on Side B while it is offline.

• Application is turned off and turned back on directed to the system disks on Side B. Application downtime is only 30-100 seconds.

• Full restore option if upgrade causes undesirable server behavior

CPU &Memory

I/O

CPU &Memory

I/O

CPU &Memory

I/O

CPU &Memory

I/O

CPU &Memory

I/O

CPU &Memory

I/O

Normal Operation System Split & Upgrade Resynchronization

Side A Side BSide A Side B

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VMware GSX Server 3.1

Microsoft Windows Server 2003Host Operating System

Virtualization Layer

Guest Operating Systems

VMware FT Virtual Server Environment

Hardware Requirements

Memory:512MB minimum up to 16GB for Windows Enterprise Edition

Space: 130GB for the Host plus 1GB minimum for each virtual stack

Microsoft:• Win 2000• XP• NT 4.0• Win Me• Win 98• Win 95• Win 3.1• MS-DOS

Linux:• RH AS• RH 6.2 – 9.0• SuSE Ent 7, 8• SuSE 7.3 – 9.1• Turbo 7.0, 8.0• Mand 8.0-9.2

Netware:• 6.5 SP 1• 6.0 SP 3• 5.1 SP 6• 4.2 SP 9

Solaris:x86 Platform Edition 9

FreeBSD:• 5.0 & 5.2• 4.8 & 4.9• 4.0- 4.6.2

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Benefit #4 – Remote Server Management

• Integrated management:– Standalone– Remote (In & Out-of-band)

• Complete state coverage:– System boot

• Operating system• SNMP Based

• Open standards:– Standard MIB interface for

linking to Tivoli, OpenView, UniCenter, etc.

Industry standard SNMP based management software.Industry standard SNMP based management software.

Module Module ControlControl

Module Level Module Level System System InformationInformation

On-LineOn-LineDiagnosticsDiagnostics

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320Ma Server Family• 320Ma DC - Dual Core CPUs – Data Center Performance Server

– Equivalent to almost 4 x 2.8GHz Xeon CPUs logical– Supports up to 16GB Memory

• 320Ma 3.6GHz – 2 x 3.6GHz CPUs – Ideal Virtual Host– Supports up to 16GB memory– Includes riser card

• 320Ma 3.2GHz – 2 x 3.2GHz CPUs – App Platform– Supports up to 8GB memory– Ideal SMB or departmental app platform

• 320Ma Single – 1 x 3.2GHz CPUs – Volume– Supports up to 4GB memory– No support for Active Upgrade– Not Upgradeable to dual CPUs– Volume purchases only

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NEC Storage S1500

• Compact Design:– 15 Drives and Electronics in single

3U enclosure (1 hot standby)– Supports up to 4 enclosures

• Total of up to 60 Drive Bays• Total of 13.8TB with 300GB HDDs

• Performance:– Fiber Channel Optical HBA

• 4GB/s HBA– Integrated Processor (s)

• 1MB of Cache per controller• RAID 0,1,5,10, 50, 6

• Reliability w/Redundant– I/O Paths– RAID & Cache Controller(s)– Power Units & Batteries

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Benefit #5 – TCO and Performance vs Clusters

App AOS A

Fault Tolerant Fault Tolerant ServerServer

Processor& I/O

Module

App AOS A

App BOS B

Heartbeat

Shared Storage

System 1 System 2

Nor

mal

N

orm

al

Ope

rati

onO

pera

tion

Cluster ServersCluster Servers

App AOS A X

Afte

r Fa

ilove

rAf

ter

Failo

ver

App AApp AApp BOS B

Heartbeat

Shared Storage

System 2

System 1

Processor& I/O

Module

RAID

Lockstep

Processor& I/O

Module

RAID

Lockstep

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FT Total Cost of Ownership ModelCO

ST

PhaseInstall Service Admin.Software OutageHardware

NEC ftNEC ftClusterCluster

NEC FT should be judged based on Total Cost of Ownership, not Price/Performance. THE NEC FT TCO beats a 2 node cluster.

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FT vs. Cluster Comparison

99.999%5 min. average/yearAvailability 99.9%

>8 hrs. average/year

Recovery time Zero switchover Minutes of failover

Data loss None (memory & disk) Disk protection Only

Implementation No work requiredScript development

&testing

Application modification RecommendedNone required

OS & Application Multi-licenses RequiredSingle license

Lights out ExtensiveIT support

FT series Cluster solution

Performance Potentially serious impact No impact

System integrity Complete None

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FT vs. Cluster Total Cost Comparison

Total Cost HP DL380 G4 NEC 320Ma

Base system:System & 1 OSSecond Operating SysLegato Cluster Software4 Hr. Service Contract Total

$22.8K3.3K6.5K1.8K

$34.4K

$31.5KNot RequiredNot RequiredNot Required

$31.5K

1-Year Total Cost-of-Ownership study – 320Ma vs. HP DL380 G4

Other Costs:

Cluster Setup time

Duplicate Application

Enterprise Ed Software

?

??

Downtime: $?K

Total TCO: $34.4K + SW + setup + downtime

SW License – 25 Users

Cluster Enabled

Standard SW

Exchange 2003

2 x $3,999

1 x $699

Microsoft SQL

2 x $6,381

1 x $3,585

Cluster Setup

Cluster with Basic Apps by

HP

Custom Cluster

with Exchange

or SQLMicrosoft Software

HP Price $6,000

3 weeks$30,000

On average 9 hours per year

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FT Total Cost of Ownership vs GP serversCO

ST

PhaseInstall Service Admin.Software OutageHardware

NEC ftNEC ftGP serverGP server

NEC FT should be judged based on Total Cost of Ownership including the cost of downtime.

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TCO – FT vs GP Hot Stand By

Acquisition

Costs (AC) HP NEC

Hardware $10,490 $29,495

OS Software $1,598 $2,000

Installation $1,550 $1,999

3 Years Support $1,898 $1,475

Subtotal $15,536 $34,969

Downtime

(6dy x12hr) 3 Years

$2.5K per hour

$5K per hour

$10K per hour

NEC @ 99.999%

$280 $561 $1,123

HP @ 99.9%

$28,170 $56,340 $112,680

TCO AC plus Downtime($2.5K per hour)

A&AC plus Downtime($5K per hour)

A&AC plus Downtime($10K per hour)

NEC @99.999%

$35,249 $35,530 $36,092

HP @99.9%

$43,706 $71,876 $128,216

NEC: TCO superiority!

NEC 320Ma 3.2 versus HP DL380 G4 Standalone Server with Cold Standby

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Blade Servers

• General purpose servers in a smaller form factor

• All reliability issues for general purpose servers apply to blade servers

• High availability is achieved with software clusters

Network, SCSI I/F

Intel Processor

Server Control Processor (BMC) Expansion Slot

Intel Processors

Memory

CPU Cooling Fan

Express5800/120Ba-4

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Disaster Tolerance SolutionDisaster Tolerance Solution

• Since 9/11 disaster tolerance has become a critical requirement for IT Directors

• The challenge:– Protect mission critical data in the event of the destruction

of local computing resources– Allow surviving resources to continue working with access

to the latest data– Don’t break the IT budget to do it.

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LAN LAN

FT Disaster Tolerant Solution

FT Server(320Ma)

FT Server(320Ma)

WAN (T1-1.5Mbps, 60ms RT latency)

Site A Site B

External Storage(S1500)

External Storage(S1500)

Protection against

unexpected HW failures

Corporate Network

Protection against

unexpected SW failures

Protection against major

Disasters

R R

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Disaster ScenarioSite A – 40 SQL Database Users logged into local FT server when a fire breaks

out in the computer room.

Failover:

• Users lose access to the server (A)

• When network loses contact it initiates a failover using “Floating IP Address or Floating IP Name”. Failover in about two minutes.

• Users log back into accounts but they are now running on remote server B via corporate with full up-to-date data.

LAN LAN

FT ServerFT Server

WAN

SiteA

SiteB

Corporate Network

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Disaster Scenario (continued)

Recovery:

• Servers reconnect and database begins resynch of changed or new data

• Once synchronization completes, reset can be automatic or on-command

• Automatic – As soon as the databases are ready users lose connection to remote server. When they re-login they are directed to local server

• On-command – IT managers can initiate reset later in day with appropriate warnings to users

LAN LAN

FT ServerFT Server

WAN

SiteA

SiteB

Resynch

Corporate Network

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Conclusions

5 Customer Benefits of the FT Server:– 99.999% Uptime– Easy Maintenance– Single copy of Standard Software– Great Remote Management Tools– FT TCO Beats Software Clusters

Disaster Recovery Solution:– No Data Loss– Less than 4 minutes of application loss– No reprogramming of users or devices– Affordable to Small/Medium Businesses

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