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March 1999

DPT Raid Controller 
- DPT ( http://www.dpt.com) builds a complete line of SCSI raid controllers
Adding Memory 
- Adding Memory to SCO Unix, tuning NBUF and NHBUF to use that RAM
Visionfs Printing  by UniTech Informatica Ltda
- This is an old article about SCO Visionfs printing and is only left here for historical purposes.
Apache- The Definitive Guide 
- There's no doubt that Apache is the standard bearer for web servers. There also seems to be general agreement that Apache runs much faster than Netscape under most conditions. This might not matter a bit to you if all you are doing is running a small intranet server, but as things get larger and more complex, Apache looks more and more attractive.
High Performance Computing 
- Is a Pentium 200 a high performance computer? Certainly if you compare it to 1970's computing, it is. In fact, the small computers of today have many of the features of yesterdays supercomputers. The Pentium Pro CPU, for example, is really a RISC design with pipelining, out of order execution and speculative execution: features that only a few years back were found only in extremely expensive systems.
The Practice of Programming 
- a book about programming. It was written by Kernighan and Pike. Enough said.
Understanding RAID 
- Just a very few years ago, RAID was an expensive option. That's all changed, and today anyone with high disk performance needs or concerns about data reliability should consider some sort of RAID configuration.
Understanding SCSI 
- If all you have is devices with the same speed, then all you need to understand is termination and ID's. You don't need to grok low voltage differential vs. high voltage differential; you don't really even need to understand differential (it just means that signals are determined by the difference between a positive and a negative voltage source rather than by a fixed voltage level; it's more immune to noise). If all you understand is termination and ID's, you can succesfully install SCSI devices. The rules for termination are simple: each end of a SCSI chain needs to be terminated. The rules for ID's are pretty simple, too, but there are gotcha's in all of this: