set in trajan boldset in trajan bold author kevin harrington created date 11/18/2003 3:20:58 pm

Spinnaker Networks

SC 2003

11/19/2003

Spinnaker Proprietary and Confidential

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Spinnaker Networks

• Founded December 1999• 83 Employees• $51 Million in two funding rounds• Began shipping product in Q4 2002• Agreed to be acquired by Network Appliance

on 11-4-2003• http://www.netapp.com/news/press/2003/news_rel_20031104.html• http://investors.netapp.com/MediaRegister.cfm?MediaID=9758 • http://investors.netapp.com/downloads/transcript81903.pdf


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Spinnaker SpinFS Advantages

• Clustering• scale to hundreds of servers• location transparency• dynamic online data reconfiguration• scales like a SAN

• Performance• single box performance• cluster performance scales with number of servers

• Open storage • support for most industry leading storage arrays

and switches


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SpinFS Storage Hierarchy

RAID 5

RAID 5

STORAGE POOL 2

RAID 1

STORAGE POOL 1VFS A

VFS B

VFS D

VFS C

• Single Storage Space subdivided into one or more STORAGE POOLS

• Each storage pool is a collection of one or more RAID sets

• One or more VIRTUAL FILE SYSTEMS (VFS) created in each storage pool.

• Each VFS may be placed in a storage pool with attributes to meet business requirements


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Clustering – Global Name Space

Location independence

Atomic move Class of service Performance scaling Mirrors, snapshots

Unix workstation

Windowsdesktop

UNIXworkstation

Windowsdesktop

SpinServer 1

SpinServer2

SpinServer3 acct

Q1 Q2 random

P1 P2

Q1 Q2 acct random P1 P2


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Spinnaker Performance – SPEC

• Spec SFS97_R1 results• SpinServer 3300

• 23,000 ops/sec NFSv3/TCP – dual Intel Xeon PIII

• SpinServer 4100• 35,000 ops/sec NFSv3/TCP – dual Intel Xeon P4

• NTAP 960• 25,000 ops/sec NFSv3/TCP


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Spinnaker Performance

• Cluster results (SpinServer 3300)• 117K ops/sec NFSv3/TCP 6 way cluster

• 12 total Intel CPUs• clients distributed evenly among servers

• 5/6 of workload entering any one server goes across cluster link

• linear scaling with 12-20% switching cost• much better than SAN file systems


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Scaling - SpinnakerSpinServer Spec/Ops in Uniform Cluster

0

50000

100000

150000

200000

250000

1 6 11

SpecOps


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Spinnaker Performance - Streaming

• Aggregate IO Performance (4100)• Read from drives (9K MTU) – two GigE ports

• 235 MB/sec• Read from cache (9K MTU) - two GigE ports

• 236 MB/sec• Write to drives (9K MTU) - two GigE ports

• 195 MB/sec

SpinServer Architectural Details


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Architecture Detail

Fibre Channel

Client Access

Gigabit Ethernet

Fibre Channel

Disk Function• Caching• Locking

XGigabit EthernetSwitch

Spinnaker SpinFS: 2-Stage Distributed File System1. Any data access request

“switched” to appropriate disk back end

2. Standard GigE cluster fabric

3. No client code changesrequired for distributed cluster capability

4. 2-stage architecture –separate N and D functions interconnected via SpinFSprotocol – enables scaling in performance and capacity while eliminating file locking issues associated with other architectures

Network Function• TCP termination• VLDB lookup• Protocol translation to SpinFS

SpinFS Protocol

Network Function• TCP termination• VLDB lookup• Protocol translation to SpinFS

Disk Function• Caching• Locking

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Client Access

Gigabit Ethernet

Spinnaker Networks

ArchitecturalComparison


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Clustering Architectures

• Three architectures• Classical appliance (no real clustering)• Clustering over SAN (distributed locking)• Clustering via NAS switching (Spinnaker)


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Classical NAS–Automounter

Automounted name

Appliance1

Appliance2

Appliance3

proj

A B

B1 B2 B3 A1 A2 A3

A

proj B C

C

B3A2B1


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Classical NASStrengths & Weaknesses

• Strengths• simple, if growth is very low

• Weaknesses• hard to manage growth past 5-10 servers• no real CoS management

• because no transparent data movement• no performance scaling to single export


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Distributed Locking – Cluster via SAN

DistServer 1

DistServer2

DistServer 3

proj

A B

DistServer4

B1 B2 B3A1 A2 A3

XLock Server


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Distributed Locking Strengths and Weaknesses

• Strengths• works best when you need > 400 MB/sec R/W BW

• to small set of very large files• handles online growth very easily

• add more space to existing storage pool (only)

• Weaknesses• performance typically poor for “normal” sized files

• multi-megabyte before locking overhead amortized• don’t scale more than 4-8 machines in a cluster

• locking overhead increases as servers increase• no real CoS management

• ever-growing storage pool has single CoS


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Spinnaker NAS Switch – NAS Clustering

Location independence Class of service Atomic move Mirrors, snapshots

Unix workstation

Windowsdesktop

UNIXworkstation

Windowsdesktop

SpinServer 1

SpinServer2

SpinServer 3 acct

Q1 Q2 random

P1 P2

Q1 Q2 acct random P1 P2


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Spinnaker NAS SwitchStrengths and Weaknesses

• Strengths• scales to hundreds of machines

• scales like a switch (fixed costs for going remote)• no global lock contention• move VFSes easily between SPs with differing CoS• allows differentiation on

• RAID level, drive abilities• failover status• server expected load, speed

• flexible data management• entire configuration can change online, transparently

• Weaknesses• bounded performance to single file


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Sales Slide (Caution: Colors!)

• Faster than competition• SpinServer 4100 is 1.4X NetApp F960

• Lower TCO than competition• Less than ½ the price of NetApp F960

• both acquisition and 3 year TCO costs.

• More features than competition• NAS switching cluster implementation• 1000s of snapshots• Works as NAS gateway

• to third-party storage arrays and SANs• Select mirror, snapshot granularity on VFS basis• Dynamic, online data movement within cluster

Spinnaker Networks

Thank you

[email protected]

set in trajan boldset in trajan bold author kevin harrington created date 11/18/2003 3:20:58 pm

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