right place, right time jim kaplan, consulting product specialist northern california computer...

Right Place, Right TimeJim Kaplan, Consulting Product Specialist

Northern California Computer Measurement GroupSacramento, California

August 5, 2003

© Copyright 2003 Storage Technology Corporation

Good Morning!

›I am an Automated Tape Storage Solutions Specialist–BUT

›I work for a Storage Management company–SO

›I want the right solution for my customer


Questions of the Day

›Why not put it all on disk?

›Where is the magnetic recording industry going?

›Why am I trying to decide on a single level of storage?

›What is Information Lifecycle Management?–Store

–Manage

–Replicate

–Integrate

–Cost-effectively

›What is the future of Backup?


Is Tape Dead?


Tape: To Live or Die

›The Rap Against–Unreliable

–Labor intensive

–Hard to manage

–Bulky

–Slow

–It’s old technology

–Disk costs getting closer

›The Inherent Advantages–Reliable

–User friendly

–Automation is prevalent

–Fast

–Technology is very current

–Efficient (100% utilization)

–Best cost of ownership

–Tape capacity and speed improving faster than disk


International Storage Industry Consortium (INSIC)

›Founded in 1991

›Membership: –20 storage companies

–32 universities and government labs

›Activities –Create an information storage industry technology roadmap

and research strategy

–Work with government to gain support for the information storage industry

–Foster the establishment of pre-competitive joint research projects, involving collaboration among its members

–StorageTek team leaders for head design and technology


Magnetic Recording Technology

Track Width

Bit length

Tracks per inch (tpi) = (Track Width)-1

Bits per inch (bpi) = (Bit Length)-1

Areal density = (Tracks per inch) x (Bits per inch)

Media

Recording Head

Soft magnetic under-layer

Longitudinal recording

Perpendicular recording


› Super-paramagnetic effect–Limit ~1Tbit/inch2 *

› Disk–Disk is at ~0.050Tbit/inch2 today

–14 inch2 recording area on 3 ½ inch platter

–At 60%/yr growth the limit will be reached in about 7 years

–Disk capacity growth will slow down over the next 10 years as the limit is approached and new technologies must be developed.

› Tape–Tape is at ~0.0001Tbits/ inch2 today

–14,000 inch2 recording area on ½ inch cartridge

–At 60%/yr capacity growth tape will reach 0.005Tbits/inch2 in 10 years

–Tape will not reach any fundamental limits

Will Areal Density Growth Slow?

*“A Hard Disk Drive Using Magnetic Recording at One Terabit Per Square Inch,” Roger Wood (IBM), presented at the NSIC Alternative Storage Technologies Symposium, June 26, 2001. Proceedings are available from NSIC, [email protected] or 858-279-7230.

Advantageof Tape


INSIC 10 Year Roadmap

›Consensus of over 40 researchers–Representing virtually every large tape drive manufacturer,

tape media and substrate supplier, many of the leading research universities.

›Goal to remain competitive with disk ($/MB) and be technically feasible.

›Keep the ratio of the capacities of a tape cartridge to a single 3 1/2 disk platter constant (Ratio = 3.3)

›Assume:–Disk capacity growth will be 60%/year

–Disk data rate growth will be 26%/year


INSIC Tape Roadmap

342930 Data Rate Ratio (Disk/Tape)

3.33.33.3 Capacity Ratio (Tape/Disk)

MB/sec85522774 Disk Drive Data Rate

TB30.30.03 Disk Drive Single Platter Capacity

MB/sec1861.7 Data Rate/Channels (User*)

MB/sec2582.5 Data Rate/Channel (Raw)

m/sec106.54 Tape Speed

Kb/in500250125 Linear Tape Bit Density

Tb/in98002700900 Linear Tape Track Density

m14001000600 Approx. Length of Tape

mm3.85.38.8 Tape Thickness

TB1010.1 Tape Cartridge Capacity

Unit201120062001 Year


INSIC Technology Conclusions

›Tape can continue to remain a cost competitive solution compared to disk

– INSIC roadmap illustrates this competitiveness

–Roadmap is achievable with both helical and linear tape demonstrations showing feasibility

›Disk is expected to slow its capacity growth from 100% per year to 60%.

›StorageTek presented the feasibility of a 1TB cartridge

–Goddard Mass Storage Systems Conference - 2002


Putting it “all on disk” will cost you more by a factor of 50*

Primary DISKGigabyte $60

Terabyte $60,000

Petabyte $60,000,000

Automated TAPEGigabyte $1.20

Terabyte $1,200

Petabyte $1,200,000

Most current studies indicate that customers maintain7 to 10 times more data on tape than on disk.

*Mid-range disk drops to 30 times as expensive as tapeATA disk is still 10 times as expensive as tape


0

200

400

600

800

1,000

1,200

1,400

2001 2002 2003 2004 2005 2006 2007

Raw Capacity (GB)

High-End Tape Futures*

IBM 3590StorageTek 9840StorageTek 9940LTOStorageTek New

2,500

*Presented at Gartner PlanetStorage 2003


NSIC limit:1 Tbit/sq in


Magnetic RandomAccess Memory

3 atoms thick

MicroscopicHoles punched


Storage Management Strategy

–Obtain products to stretch your storage budget by providing lower cost alternatives for the life cycle of your data

–Utilize appropriate recording formats across a wide range of applications and business requirements

–Exploit pricing delta between tape, ATA and enterprise disk

–Demand superior levels of reliability and availability

–Look to leadership in overall storage management

–Are you faced with:

Shrinking Budgets? Uncertain economic times?

Fewer people?

Growing demands for

storage?

Server consolidation?

Data protection for Every catastrophe?Ever-increasing data availability requirements?

Elongating backup

windows?THEN . . .


Consider

›The Right Device for the application–Enterprise disk for transaction-oriented systems

–Fast access tape drives for HSM, SAR, Email archive, video on demand

–ATA disk for inexpensive fast data restoration

–Capacity tape (possibly WORM) for long term archival

›Select devices with an easy migration path–Utilizing existing media

–Concurrent automation of multiple media types

–Providing backward read compatibility

›Doing more in less time–Faster throughput capability


Aging 30 days

Low

High

Amount of Data

Retrieval Activity

Online (ms)

Nearline (ms)Aging to 1 Year

Online (ms)Aging 3 months

Nearline (min)Aging to 1+ Years

Deletion

Time

Data Value&

ReferenceFrequency

Fast access tape

Email archive

Capacity tape

Update Journal

ATA* inline storage

Client server disk

Enterprise disk

Storage Mgmt SW

ILM: No single product can make it happen

Virtual tape

*Advanced Technology Attached


The Future of Backup?

›It’s not backup that matters

›It’s recovery that is really important

›Backup times are becoming less critical due to–Mirroring

–Peer-to-peer

–Snapshots

–Journaling of updates

–RAID protection against hardware failures

–Database logs enable rapid recovery


New Layers in the Hierarchy

›In the old days we had online and offline–Very expensive disk drives and manual tape plus hardcopy

›With tape automation came Nearline

›Over 10 years later, there are several Nearline tiers–Low-end (4mm, 8mm), Mid-range (LTO, SDLT)

–High-end (3590, 9840, 9940)

›Now, we are seeing a place for Inline storage–ATA will dominate in low-end servers as well as move into

some Nearline applications especially backup/restore

–By 2006-2007, FC, SCSI and ATA disk will have equal market share


SynchronousMirroring

AsynchronousMirroring orReplication

Snapshot

Backup

Archiving

RestoreTime

Slow

Fast

Costper GB

Low

High

Retention

Long

Short

DataDensity

High

Low

Online

Nearline

Inline

Where do the New Tiers* Fit?

*As defined at Gartner PlanetStorage 2003


Disk-to-disk Replication (D2D)

›Why D2D replication?–D2D replication provides better reliability and faster recovery time

compared to traditional tape based backup and recovery process

›D2D replication must be tied in with ISV backup/restore application functions–Veritas:

• Backup Exec, NetBackup DataCenter, Volume Manager, Vault for D-D-T

–Legato:• Networker DiskBackup Option (DBO), DISKXtender

–CA• BrightStor ARCserve Backup

–IBM• Tivoli Storage Manager (TSM)

–FalconStore


Disk as Tape

›Why Disk as Tape Solutions?–Improve reliability and efficiency/performance of traditional

tape based backup recovery processes

–Since the products emulate tape interface, user can obtain the benefit of fast D2D backup and recovery without changing current back up processes

• Use standard ISV Backup/recovery software

–However, it may not address the backup window issue


All the popular interfaces

Conversion

HSM

Policy-based mgmt

Emulation

Virtual Tape Addresses

ESCON FICON

Real Tape Interfaces

Recovery

Bus or SwitchBuffer/Cache

TapeCatalog

Bus or Switch

DataMover

FibreChannelSCSI iSCSI

Where Tape Virtualization Must Go


Some of the OptionsFunction Category Company Product Comments

Low-Cost Disk NetApp NearStore FASEMC CLARiiON DiskStorageTek BladeStore ATA DiskSnap Appliance SnapServer NASBlueArc MTS NAS

Tape Emulation Complete Solution Nexsan InfiniSAN DTDQuantum DX30System Upgrade Aurora VTC Ultera VTCStorageTek EchoView ContinuousAsaca FireflyInterkom EVTS

Controller Only Ultera Mirage VTCBus-Tech MAS ESCON OnlyTape Labs VTS

Software Only Alacritus SecuritusDiligent VTF MF Mainframe Diligent VTF Open Open

Disk to Disk to Tape Software Only IBM TSMVeritas NetbackupCA BrightstoreLegato Networker

Virtual Tape Complete Solution IBM VTSNeartek VTLMStorageTek VSM Mainframe OnlyFujitsu Siemens CentricStor

Software Only CA Vtape Mainframe OnlyBackup Appliance Avamar Axion Network Based

DataDomain Restorer Compression


In Conclusion

›Don’t think disk vs. tape

›Think multiple tiers in the storage hierarchy

›Don’t view disk as the ultimate backup

›Think disk for fast recovery for minor incidents

›Think tape as the insurance policy that will keep your company in business in the event of major disaster

›Don’t get hung up on point products–Everybody delivers highly reliable products

›Demand a cost-efficient overall storage solution

Questions?

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