PMC Proprietary & Confidential November 2010 Product Presentation

August 2010Slide 2PMC Proprietary & Confidential PMC-Sierra Overview PMC-Sierra is the premier Internet infrastructure semiconductor solution provider Major areas of product focus include: -COMMUNICATIONS: WAN Infrastructure (Wireline; Wireless), FTTH (EPON; GPON) -ENTERPRISE: Enterprise Storage (SAN & NAS Systems; x86 Servers), Printers & Networking 2009 revenues $496M; 1 st half 2010 revenue $313M; net cash $433M Approximately 1,200 employees worldwide *(as of Mar 28, 2010)

August 2010Slide 3PMC Proprietary & Confidential PMC’s Revenue Profile Rev = $496 million WirelineProcessor / SoCEnterprise StorageAccess / FTTx Rev = $249 million Enterprise Storage continues to be a growth area for the company

August 2010Slide 4PMC Proprietary & Confidential CSD – Channel Storage Division Bringing together the best of two worlds PMC 1st to market with 6Gb/s SAS RoC & expanders Adaptec leading provider of controllers to the channel Adaptec Brand6G SAS Leadership Robust RAID CodeSilicon Expertise InteroperabilitySignal Integrity Innovative SolutionsOEM Relationships

August 2010Slide 5PMC Proprietary & Confidential Diversified Customer Base Key OEM Customers Key Channel Customers Key Datacenter Customers

Current Shipping Products

August 2010Slide 7PMC Proprietary & Confidential Adaptec Series 1 Hardware -4 SATA/SAS ports -Support for SAS 1.0 Features -x4 PCI-express Gen 1.1 -Enclosure Management support (SES2, SGPIO, LEDs for I/O Activity and Drive failure) Features -128 SAS address support -Tape, Tape Autoloaders, HDD & SSD support -Windows and open source Linux -Quick boot BIOS for Workstations (requires <10 seconds to boot) ModelConnector TypeForm Factor 14051x SFF-8087Low Profile 10451x SFF-8088Low Profile Performance Metrics Sequential (MB/sec)Random (IOPS) ,000

August 2010Slide 8PMC Proprietary & Confidential Adaptec Series 2 ModelConnector TypeForm Factor 28052x SFF-8087Low Profile 24052x SFF-8087Low Profile 20451x SFF-8088Low Profile Performance Metrics - Streaming RAID LevelReads (MB/sec) Writes (MB/sec) Hardware -Utilizes Intel IOP348 3G 800 MHz RoC -Support for SAS 1.0 Features -x8 PCI-express Gen MB DDR2-533 DRAM Features -Simple Volume, JBOD, RAID 0,1, 10, 1E -Hybrid RAID 1, SAS address support -Tape, HDD and SSD support -IOPS – 37,000 -SSD caching ready

August 2010Slide 9PMC Proprietary & Confidential Adaptec Series 5 Performance Metrics - Streaming RAID LevelReads (MB/sec) Writes (MB/sec) / Hardware -Utilizes Intel IOP348 3G 1.2 GHz RoC -Support for SAS 1.0 Features -x8 PCI-express Gen MB or 512MB DDR2-533 DRAM -Optional BBU (onboard or tethered) Features -Simple Volume, JBOD, RAID 0,1, 10, 1E RAID 5, 6, 50, 60 -Hybrid RAID 1, SAS address support -HDD and SSD support -IOPS – 55,000 -SSD caching ready ModelConnector TypeForm Factor x SFF x SFF-8088 FH, ¾ Length x SFF x SFF-8088 FH, ¾ Length x SFF x SFF-8088 FH, ¾ Length x SFF-8087Low Profile x SFF-8088Low Profile x SFF x SFF-8088 Low Profile x SFF-8087Low Profile ABM-800(T)n/a

August 2010Slide 10PMC Proprietary & Confidential Adaptec Series 5Z Performance Metrics - Streaming RAID LevelReads (MB/sec) Writes (MB/sec) / Hardware -Utilizes Intel IOP348 3G 1.2GHz RoC -Support for SAS 1.0 Features -x8 PCI-express Gen MB DDR2-533 DRAM Features -Flash memory & Supercap -Always available - no degradation -No maintenance or replacement cycle -Stored data accessible for years, not hours -No incremental disposal costs ModelConnector TypeForm Factor 5805Z2x SFF-8087Low Profile 5445Z 1x SFF x SFF-8088 Low Profile 5405Z 1x SFF-8087Low Profile

Caching Solutions

August 2010Slide 12PMC Proprietary & Confidential Target Workloads High Performance Hybrid Array SSD read capability is 100 times faster than HDD Up to 8 time faster in real world applications SSD read capability is 100 times faster than HDD Up to 8 time faster in real world applications Single Intel X25-E in SSD Cache 12 Seagate 15K rpm SAS HDDs Series 5 Series 5 with SSD Caching Adaptec RAID Card SATA or SAS drives SSD

August 2010Slide 13PMC Proprietary & Confidential Option 1Option 2 Adaptec 32GB or 64GB SSD Cache Module Adaptec RAID cards 2805, 2405, , 5445, 5805, 5085, 51245, 51645, 52445, 5805Z Off the shelf SSD (SLC or MLC) – see compatibility list for preferred drives Adaptec RAID cards 2405Q, 5805Q, 5805ZQ Enabling SSD Caching Solutions Adaptec RAID card Adaptec SSD drive - 32GB or 64GB Up to 8 SSDs and/or 512GB of cache Adaptec Series “Q” card Standard SSD Up to 8 SSDs and/or 2TB cache

August 2010Slide 14PMC Proprietary & Confidential Adaptec SSD Cache Performance Kit SSD caching performance solution kit -Intel X25-E SLC SSD 32GB or 64GB -Paired with any Series 5xxx or Series 2xxx card -Upgrade solution for controllers in the field Performance -Up to 1.2GB/s throughput -Up to 55K IOPs -Read-intensive applications: , eCommerce, Web Features -SSD Support / Read Caching -PCIe1.1 based -3Gb/s SAS/SATA based Usability -ASM Management +

August 2010Slide 15PMC Proprietary & Confidential Adaptec Series Q ModelConnector TypeForm Factor 5805ZQ2x SFF-8087Low Profile 5805Q2x SFF-8087Low Profile 2045Q1x SFF-8087Low Profile Performance Metrics - Streaming RAID LevelReads (MB/sec) Writes (MB/sec) / Hardware -Utilizes Intel IOP348 3G RoC -Support for SAS 1.0 Features -x8 PCI-express Gen MB or 512MB DDR2-533 DRAM Adaptec SSD Caching -Up to 2TB of SSD cache on 5805(Z)Q -Up to 80GB of SSD cache on 2405Q Features -Simple Volume, JBOD, RAID 0,1, 10, 1E RAID 5, 6, 50, 60 -Hybrid RAID 1, 10 -Support for MLC/SLC SSDs for caching -Up to 55,000 IOPS

August 2010Slide 16PMC Proprietary & Confidential Scheduled Software Releases Hybrid SSD/HDD RAID 1 and RAID 10 support IOPS performance improvement on 4K reads Enhanced statistics function Detailed SMART parameters Export Phone Home stats Send statistics to variable destination ASM for Debian & Ubuntu Support for Series Q Hardware Support Series 2 Series 3 Series 5 Series 5Z Support for 3TB HDDs Refresh for Series 3 Enhanced platform compatibility CIM Provider for VMWare ESXi 4.0 Hardware Support Series 2 Series 3 Series 5 Series 5Z Bootable DVD support for Nehalem platforms Support for USB devices on Boot CD HPHA including SSD Write back caching Optimized SSD caching efficiency & performance statistics Enhanced BBU monitoring Hardware Support Series 2 Series 5 Series 5Z Series Q Released August 2010 Q2’11 Shipping Qualification

August 2010Slide 17PMC Proprietary & Confidential