Specifications
Table Of Contents
- IBM PC Server and Novell NetWare Integration Guide
- Abstract
- Contents
- Figures
- Tables
- Special Notices
- Preface
- Chapter 1. IBM PC Server Technologies
- Processors
- Clock Rate
- External Interfaces
- Processor Types
- Multiprocessing
- Memory
- Caches
- Memory Interleaving
- Dual Path Buses
- SynchroStream Technology
- Memory Error Detection and Correction
- Standard (Parity) Memory
- Error Correcting Code (ECC)
- Error Correcting Code- Parity Memory (ECC- P)
- ECC on SIMMs (EOS) Memory
- Performance Impact
- Memory Options and Speed
- Bus Architectures
- ISA Bus
- EISA Bus
- Micro Channel Bus
- PCI Bus
- Disk Subsystem
- Hard Disk Interfaces
- SCSI Technology
- SCSI Adapters
- Hard Disk Drives
- RAID Technology
- RAID Classifications
- Recommendations
- LAN Subsystem
- Shared RAM Adapters
- Bus Master Adapters
- PeerMaster Technology
- Security Features
- Tamper- Evident Cover
- Secure I/ O Cables
- Passwords
- Secure Removable Media
- Selectable Drive Startup
- Unattended Start Mode
- Systems Management
- DMI
- SNMP
- NetFinity
- SystemView
- Fault Tolerance
- NetWare SFT III
- Uninterruptible Power Supply (UPS)
- APC PowerChute
- Chapter 2. IBM PC Server Family Overview
- Chapter 3. Hardware Configuration
- The Setup Program
- Main Menu
- Advanced Menu
- Security
- EISA Configuration Utility
- SCSI Select Utility Program
- System Programs
- Starting From the System Partition
- Starting From the Reference Diskette
- Main Menu Options
- Backup/ Restore System Programs Menu
- Set Configuration Menu
- Set Features Menu
- Test the Computer
- More Utilities Menu
- Advanced Diagnostic Program
- RAID Controller Utility
- Drive Information
- Formatting the Disks
- Defining a Hot- Spare Disk
- Creating a Disk Array
- Defining Logical Drives
- Setting the Write Policy
- Initializing the Array
- Backup/ Restoring the Configuration
- Chapter 4. Novell NetWare Installation
- ServerGuide Overview
- Starting ServerGuide
- Installing NetWare 4.1 with ServerGuide
- Installing NetWare 3.12 with Diskettes
- Hardware Requirements
- Software Requirements
- Information Requested at Time of Installation
- Installation Files
- Installation Procedure
- Installing NetWare 4.1 with the Original CD- ROM
- Hardware Requirements
- Software Requirements
- Installation Procedure
- NetFinity Services for NetWare
- System Requirements
- Installing NetFinity Services for NetWare
- The RAID Administration for NetWare Utility
- Installing the Utility
- Hard Disk Failure Simulation
- Simulating with a Hot Spare Drive
- Simulating without a Hot Spare Drive
- Chapter 5. Performance Tuning
- Appendix A. EISA Configuration File
- Appendix B. Hardware Compatibility, Device Driver, and Software Patch Information
- Appendix C. Configuring DOS CD-ROM Support
- List of Abbreviations
- Index
- Special Characters C
- Numerics
- A
- B
- D
- E
- F
- H
- M
- I
- N
- K
- L
- O
- P
- S
- Q
- R
- T
- U
- V
- W
- Z
- ITSO Technical Bulletin Evaluation RED000

1.4.5 Performance Impact
As previously discussed, systems which employ ECC memory have slightly
longer memory access times depending on where the checking is done. It
should be stressed that this affects only the access time of external system
memory, not L1 or L2 caches. Table 1 shows the performance impacts as a
percentage of system memory access times of the different ECC memory
solutions.
Again, these numbers represent only the impact to accessing external memory.
They do not represent the impact to overall system performance which is harder
to measure but will be substantially less.
Table 1. ECC Memory Performances
SIMM Memory
Controller
Impact to
Access Time
Systems where
implemented
ECC X X 3% PC Servers 500 and 720
ECC-P X 14% No more (Mod 85)
EOS X None Option for PC Servers
300, 320
Standard for PC Servers
520
1.4.6 Memory Options and Speed
The following memory options are available from IBM:
•
4MB, 8MB, 16MB, 32MB 70 ns Standard (Parity) Memory SIMMs
•
4MB, 8MB, 16MB, 32MB 70 ns ECC Memory SIMMs
•
4MB, 8MB, 16MB, 32MB 60 ns ECC Memory SIMMs
•
4MB, 8MB, 16MB, 32MB 70 ns EOS Memory SIMMs
Table 2 shows the options used by each PC server.
Table 2. Summary of Memory Implementations
PS/2 Model 70 ns
Standard
70 ns
ECC-P
70 ns
ECC
60 ns
ECC
70 ns
EOS
PC Server
300/310/320
X OPT
PC Server 500 X
PC Server 520 X
PC Server 720 X
1.5 Bus Architectures
There are a number of bus architectures implemented in IBM PC servers:
•
ISA
•
EISA
•
MCA
•
PCI
12 NetWare Integration Guide