Adaptec AHA-3985 Configurations
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Adaptec AHA-3985 Configurations

Adaptec AHA-3985 Configurations

Benchmark report fault-tolerant configurations pci raid adapter vs. netware
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Benchmark Report
Fault-Tolerant Configurations
AHA-3985 PCI RAID Adapter
vs.
NetWare

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Summary of Contents for Adaptec AHA-3985

  • Page 1 Benchmark Report Fault-Tolerant Configurations AHA-3985 PCI RAID Adapter NetWare...

  • Page 2: Table Of Contents

    Results...3 Performance ...3 Reconstruction Time...4 Conclusion ...5 Trademarks AHA is a trademark of Adaptec, Inc. Novell and NetWare are trademarks of Novell, Inc. NetBench is a trademark of Ziff Davis Publishing Company ECX Applications Engineering Adaptec, Inc. January 3, 1996...

  • Page 3: Abstract

    This is commonly known as RAID level 1 or mirroring. Adaptec’s AHA-3985 PCI RAID adapter fully supports RAID level 1 as well as the more advanced RAID level 5. RAID 5 is the striping of data across an array of drives with redundancy parity data spread across all drives.

  • Page 4: Reconstruction Time

    For the native NetWare mirroring configuration, an Adaptec AHA-2940 was used as the SCSI interface adapter. It is important to note that the Disk Mix test intensely exercises the file server, such that a load of 20 clients is equivalent to 40 - 100 average users, depending on the definition of average user.

  • Page 5: Results

    Figure 1 below graphs the results of the Disk Mix test for the different configurations in kilobytes per second. The AHA-3985 provides I/O performance improvements during normal operations in both RAID 1 and RAID 5 configurations of 19% and 28%, respectively. This translates into better system performance seen by end users when accessing a data volume controlled by the AHA-3985.

  • Page 6: Reconstruction Time

    Figure 2 displays the time required for the system to reconstruct a new drive and return the system to full fault-tolerance status. The AHA-3985 and its software drivers are able to significantly shorten the reconstruction time by 60% and 40% over NetWare mirroring for RAID 1 and RAID 5 respectively.

  • Page 7: Conclusion

    RAID 5 for more flexible and cost effective data redundancy. In a typical NetWare configuration, the AHA-3985 is able to perform up to 28% faster than NetWare’s native fault-tolerant mode of operation. The AHA-3985 restores a mirrored drive to fault-tolerant status 60% faster than NetWare, thus reducing the exposure to data loss.
  • Page 8 Adaptec, Inc. Intel Plato Motherboard, BIOS 0.01.20.AX1 Intel Pentium 90 MHz 90 MHz 32 MB 256 KB Adaptec AHA-3985 (AHA-2940) 3 (2) Seagate ST32550N F/W - 0014 2 GB AHA3980.DSK/ARDRVR.DSK - 1.01 (AIC7870.DSK - 1.20) RAID 5 (Mirror) AHA-1542, ISA...

  • Page 9: Controller Specifications

    Client CPU Speed: Client Network Software: Size of Client Network Cache: Controller Specifications Controller Operating System: Network Software: ECX Applications Engineering Adaptec, Inc. 10Base-T, Ethernet Accton Etherhub-8mini NE2000 Intel 486 33 MHz MSDOS 6.0, IPX/SPX 3.10, NetX 3.32 MSDOS 6.22, Windows for Workgroups 3.11 LSL 2.14, NE2000 2.02, IPX/SPX 3.01, VLM 1.20...

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