Transcript Palmer 1-3
Chapters 1-3 Concepts • • • • • • • • NT Server Capabilities Alternative Server Systems Web Windows Functions Configurations Protocols Topology Server Hardware NT Server Capabilities • • • • Scalable MS window interface Different OS in workstations E-mail, sharing resources, network communication • Microsoft backoffice products – Microsoft Mail Server, Internet Information Server, System Management Server, SQL Server • Secure • Reliable (fault tolerance) Alternative Server Systems • Novell - NetWare • DEC - PATHWORKS Web • Internet - Intranet (Internet Information Server) • Index Server for intranet access • HyperText Markup Language (HTML) Microsoft’s FrontPage Windows Functions • • • • • • Folder Mapped drive Menu bar Microsoft Exchange - e-mail My Computer Network Neighborhood (logged on computers) • Windows Explorer Configurations - LANs • Severs and workstations • Network operating system • Cabling – Coaxial (10BASE2) – Twisted-pair • Shield twisted-pair • Unshield twisted-pair (10BASET) • Network interface card (NIC) • Punch down Protocols - I • Packet • Ethernet (Carrier Sense Multiple Access with Collision Detection - CSMA/CD) • Token Ring (Token-pass) – Multistation access unit (MAU - hub) • Transmission Control Protocol/Internet Protocol (TCP/IP) – Session, addressing, routing • NetBEUI - NetBIOS Extended User Interface – No routing – Use TCP/IP Protocols - II • IPX - Internet Packet Exchange protocol – Xerox – Novell Topology • Bus • Ring • Star – For Ethernet or token ring – Hub or concentrator for line management – UTP wire Hardware for NT Server • • • • • • • • • Compatibility CPU sizing Bus speed and expansion slots Disk storage SCSI-2 adapters Memory requirements Network interface card CD-ROM drive Tape drive Types of Computers • 80486 computers with 25 MHz • Pentium computers -32 bits – Multithreading (one program) – Multitasking (more than one program) – Single-processor computers • Multiprocessor computers • Reduced instruction set computer (RISC) computers - 64-bits Compatibility • • • • • • • • • Processor (CPU) Bus SCSI adapters and drivers Video adapters Network adapters Audio adapters Modems Printers UPS (uninterrupted power supplies) CPU Sizing and Bus Speed • CPU speed - Hz (25MHz or higher) • BUS speed - 32-bit to 64-bit – Internal (instruction) and external bus (data) – Bus mastering (I/O processing activities) – Types • Extended Industry Standard Architecture (EISA) 32bit • Microchannel Architecture (MCA) 32-bit • Peripheral Computer Interface (PCI) 32-bit or 64-bit Disk Controllers • Interface between disk drives and computer • Data transfer rate • Types – Integrated Device Electronics (IDE) – Enhanced Small Device Interface (ESDI) – Small Computer System Interface (SCSI) • SCSI-1, SCSI-2 narrow, SCSI-2 wide, SCSI-3 wide Disk Storage • Disk capacity • Disk contention – – – – – Speed of individual disks Speed of disk controllers Speed of data pathway (bus) to the disks Number of disk pathway Disk caching • Disk redundancy – Redundant array of inexpensive drives (RAID) Memory Requirement • Memory – – – – Server OS - 16 MB Number of simultaneously access Amount of memory required by each access Calculation error • Error checking and correcting (ECC) memory chips – reserved memory for problems – Auto correction for parity error Network Interface Card • Well-known vendor – IBM, Intel, HP – Ethernet (10 Mbps) or fast Ethernet (100 Mbps) • Auto-configuring cards – No jumpers or dip switches – Hardware interrupts and memory location to use CD-ROM • SCSI CD-ROM – SCSI-based CD-ROM “jukebox” (hold multiple CD-ROM) • Speed 2X to 8X – 6X or 8X CD-ROM drive – X=150Mbps Tape Drive • For back up • Types – Quarter-inch cartridge cassette (QIC) • 2-4 GB – Digital audio tape (DAT) • 4-25 GB – Digital linear tape (DLT) • 10-40 GB, damage resistance, longer shelf life, faster Assignment • Review chapters 1-3 • Read chapters 4-8