2. RAID and SAN Mylex Internal-PCI and External RAID solutions for High Performance Servers, Clusters, and Storage Area Networks (SAN)

3. 2 PP010299.ppt Corporate Summary  Founded in 1983  Headquarters in Fremont, California  Publicly traded on NASDAQ as MYLX  #1 Supplier of RAID controllers in the worldwide non-captive marketplace  Shipped over 725,000 RAID controllers to date  $123.6M in revenue in 1997  Market cap of approx. $200M  350 employees

4. 3 PP010299.ppt Product Strength, Depth and Breadth  Cost Effective PCI RAID Solutions for:  Entry Level Servers  Win/tel based Workstations  High-end Desktop Systems  High Performance PCI RAID Solutions for:  Mid-level Servers  High-end Servers  External RAID Solutions for:  Enterprise Class Servers  Clustering and High Data Availability Applications  Storage Area Networks

5. 4 PP010299.ppt Quotes from Industry Leaders Microsoft Corporation “Windows NT Server Enterprise Edition is being used in more and more mission-critical roles. Our mutual customer base will benefit from Mylex’s technology and sophistication in this vital area of system engineering and performance optimization.” Edmund Muth Group Product Manager Intel Corporation “We are excited about the ability of Intel Architecture SHV Server customers to get greater functionality out of their on-board storage devices through the integration of Mylex AcceleRAID products. Hot-Plug PCI, ECC and improved RAID management/expansion support, combined with low cost, position Mylex AcceleRAID products to meet the demands of today’s SHV Server platforms.” John Haas Enterprise Server Group Industry Marketing Manager

6. 5 PP010299.ppt Market Leaders  Acer  Amdahl  Andataco  Arrow ICP  Artecon/Storage Dimensions  AT&T  Bell Micro  Bull S.A./NEC  Compaq/DEC  Data General  Fujitsu Japan  Fujitsu ICL  Goldstar  Hitachi  Ideal Hardware  Infodip  Ingram Micro  Innoquest  Intel  Lobster Computer  Lucent  Micron  MTI  NCR  NEC Japan  nStor  Octel  Packard Bell  Procom Technologies  Samsung  Seachange  Sequent  Siemens Nixdorf  Tech-Data  Toshiba  Tulip Computers  Unisys  Wyle Labs  Zenith

7. 6 PP010299.ppt  A host independent external RAID controller combining Fibre Channel and Ultra2 SCSI LVD to provide exceptionally high performance with multiple disk drive architectures for extremely large system solutions. DAC-FL

8. 7 PP010299.ppt Commodity PC Market (Including Mobile) PC based Workstations Performance Desktop PCs Mylex - Covering all your RAID needs Entry Level Servers AcceleRAID 200 eXtremeRAID-1100 DAC960-PJ DAC960-PG AcceleRAID 250 DAC-FF DAC-FL DAC-SF DAC-SX AcceleRAID 150 Mid Range Enterprise Servers

9. 8 PP010299.ppt DAC-FL: Technology  Up to 256 MB Data Cache  Dual PCI Bus design  5 1/4” form factor  2 Copper FC-AL host channels  Burst cache transfer rates: Up to 97 MB/s per host channel  4 Ultra2 SCSI LVD channels  15 devices per Ultra2 SCSI channel - 60 devices/controller  Up to 1.08TB per controller  Sustained disk transfer rates: over 52MB/s Two RISC Processors 2 Fibre Channel loops Ultra2 SCSI

10. 9 PP010299.ppt DAC-FL: Hardware 2 FC-AL channels 256 MB memory Dual RISC Processors (i960RD + i960RD) 4 Ultra2 SCSI

11. 10 PP010299.ppt  RAID 0, 1, 0+1, 3, 5, 10, 30, 50 and JBOD  Write Through and Write-back or Read-ahead support  Onboard Firmware  Variable Stripe size per controller  Variable Cache Line size per controller  Mirrored Cache  Clustering Support -- Windows NT, UNIX, SCO UNIX, NetWare  Designed to fit in an Industry standard 5 1/4” half- height form factor External RAID: Features

12. 11 PP010299.ppt External RAID: Features  Network Security Levels  Guest Access  Admin Access  Online capacity expansion  Remote Instrumentation  DMI  SNMP  SMART Support  SAF-TE and SES enclosure management  Wizard Configuration  Global Array Manager (GAM)™ software  Flash upgradeable F/W  OS-Independent Server API  Performance Monitoring  Controller Statistics  Drive Statistics  Historical Statistics

13. 12 PP010299.ppt DAC-FL: Target Applications  Designed for $15K to $150K servers  Departmental to Enterprise NT Servers  Low-end to Mid-Range UNIX Systems  3,000 to 30,000 IO’s per second  10’s of GB’s to 10’s of TB’s  Designed for Clusters  NT (Microsoft Cluster Server), NetWare Wolf Mountain and UNIX clusters  Support for Storage Area Networks (SAN)  Active / Active Duplex Configurations Concurrently operation--> performance Transparent failover / failback --> non-stop operation Mirrored cache architecture --> guaranteed data integrity

14. 13 PP010299.ppt Product Line Features  Fibre Channel --->Performance/Scalability  Active-active ---> Performance/Fault Tolerance  Failover/failback ---> Data Availability  Cache mirroring ---> Data Integrity  Ultra2 SCSI LVD ---> Performance/Scalability /Legacy Support

15. 14 PP010299.ppt DAC-SF: Technology Two RISC Processors 2 Fibre Channels loops Ultra2 SCSI  Up to 256 MB Data Cache  Dual PCI Bus design  5 1/4” form factor  2 Copper FC-AL host channels  Sustained cache transfer rates: Up to 97 MB/s per host channel  5 Ultra SCSI LVD channels  15 devices per Ultra2 SCSI channel - 60 devices/controller  Up to 1.08TB per controller  Sustained disk transfer rates: over 52MB/s

16. 15 PP010299.ppt eXtremeRAID™ 1100 Technology 233 MHz SA 110 Ultra2 SCSI 64 bit PCI  2 or 3 Ultra2 SCSI Channels  Up to 4MB Flash EEPROM  32 or 64 MB parity SDRAM + BBU module  Up to 3 internal and 3 external SCSI connectors  PCI 2.1 compliance  Dual Address Cycle  PCI Hot Plug  > 6000 Random I/O’s  > 75 MB/second sustained data transfer rate

17. 16 PP010299.ppt DAC-FF: Technology  Up to 256 MB Data Cache  Dual PCI Bus design  5 1/4” form factor  2 Copper FC-AL host channels  Burst cache transfer rates: Up to 189 MB/s  4 Fibre channels to drives  125 devices per Fibre channel - 500 devices/controller  Up to 9.0TB per controller Two RISC Processors 2 Fibre Channels to host 4 Fibre Channels to drives

18. 17 PP010299.ppt Simplex Performance and Capacity  Performance SXSFFL FF Burst IO’s Per Second 1,800 4,100 4,100 6,000 Burst (cache) Bandwidth (MB/s) 45 97 97194 Sustained (disk) Bandwidth (MB/s) 30 52 52125 Note: Sequential read performance, small blocks, no coalescing driver.  Storage SXSF FL FF Disks75* 90 60500** Terabytes (9 GB)7.8.5 4.5 Terabytes (18 GB)1.41.61.0 9.0 * Single host channel **Single ported disks

19. 18 PP010299.ppt Duplex Performance and Capacity  Performance SX SF FL FF Burst IO/s Per Second 3,600 8,200 8,200 12,000 Burst (cache) Bandwidth (MB/s) 90194194 388 Sustained (disk) Bandwidth (MB/s) 50100 100 225 Notes: 1. Sequential read performance, small blocks, no coalescing driver. 2. Burst rates are 2x simplex configuration. 3. Sustained rates are generally 1.9x simplex configuration (active-active overhead).  Storage SX SFFL FF Disks 70* 94 56 496** Terabytes (9 GB).6.8.5 4.5 Terabytes (18 GB)1.2 1.61.0 9.0 * One host channel ** Single ported disks

20. 19 PP010299.ppt Entry Level Fiber u Single Node, Single HBA and Host Loop, Dual FL’s FC HBA FL Controller 1 Port 0 Active Port 1 Active

21. 20 PP010299.ppt Performance Scaling With Fibre  Single Node, Dual HBAs and Host Loops, Dual FLs FC Hub FC HBA FL Controller 1 Port 0 Active Port 1 Active FL Controller 0 Port 0 Active Port 1 Active FC HBA

22. 21 PP010299.ppt Fault Tolerant Fibre I/O  Single Node, Dual HBAs and Host Loops, Dual FLs FC Hub FC HBA FL Controller 1 Port 0 Active Port 1 Inactive FL Controller 0 Port 0 Active Port 1 Inactive FC HBA

23. 22 PP010299.ppt Fault Tolerant Computing - Wolfpack  Dual Nodes, Single HBAs and Host Loops, Dual FLs FC Hub FC HBA FL Controller 1 Port 0 Active Port 1 Inactive FL Controller 0 Port 0 Active Port 1 Inactive FC HBA

24. 23 PP010299.ppt Parallel App Clusters - Wolfpack-II  N-Node, Switched Fibre, N-FFs Arrays, FCAL to Disk FC Switch FF Controller 1 Port 0 Active Port 1 Active FF Controller 0 Port 0 Active Port 1 Active FC HBA FF Controller 1 Port 0 Active Port 1 Active FF Controller 0 Port 0 Active Port 1 Active FC HBA

25. 24 PP010299.ppt Parallel App Clusters -- SAN / VIA  N-Node, Switched ServerNet (?), N-FFs Arrays, FCAL to Disk SAN Switch FF Controller 1 Port 0 Active Port 1 Active FF Controller 0 Port 0 Active Port 1 Active SAN HBA FF Controller 1 Port 0 Active Port 1 Active FF Controller 0 Port 0 Active Port 1 Active SAN HBA

26. 25 PP010299.ppt Mylex RAID for SAN

27. 26 PP010299.ppt Mylex RAID for SAN MYLEX: SAN solutions for all your platforms from THE RAID COMPANY!