File server

The hardware description of teetwo file server is tabulated in Table 2.1.

Table 2.1: File server hardware description

HARDWARE	UNIT	DESCRIPTION
CPU	2	Intel Pentium III 850 MHz running on 100 MHz Bus
Motherboard	1	Tyan Thunder i840 (S2520)
		with 2 sets of LVD Ultra-160 Internal Cable and
		2 sets of LVD Terminators
RAM	4	Kingston SDRAM 128 MB Bus 133 MHz
HardDisk	4	Seagate Ultra-160 SCSI 72 GB (ST173404LW)
LAN Card	1	Intel EtherExpress Pro 100+
Graphics Card	1	Asus AGP-V3800 TNT2 Vanta SDRAM 16 MB
CD-ROM	1	HP IDE CD Writer (8X,8X,32X)
Floppy Disk	1	FDD 1.44 MB
Case	1	Net server ATX Case with 2 sets of
		Redundent 300 W Power Supply
Keyboard	1	Microsoft PS/2 Keyboard
Mouse	1	Microsoft PS/2 Mouse

Highlight features of the file server hardware are listed as follows:

1. The mother board has a dual CPU shared-memory architecture.
2. Both CPUs work together in harmony. Running several programs at the same time can be accomplished with this mode.
3. The SCSI controller is dual SCSI Ultra-160 which has the maximum throughput of 320 Megabytes/sec
4. We use software RAID to help improve the I/O performance by performing parallel accessing to the hard drives.
5. The power supply for the file server is redundant power supply. If one goes down the other will serve the system uninteruptably.