The Practice of System and Network Administration Second Edition phần 9 pps

... isolated, unimportant, and not part of the team. The longer people stay with the group and the less turnover there is, the more they will feel part of the team and the more likely they are to stick with ... servers, printers, other people’s PCs, and the like. This has the same effect as if someone walked up to another person’s PC when no one was around and pull...

Ngày tải lên: 14/08/2014, 14:21

... whether the change should go ahead regardless of ‘ the weather’’ or wait until there is ‘‘good weather’’: the operating status of the service. In other words, some changes are approved on the ... schedule, rather than the other way around. When his customer made a mistake, Tom was blamed because some of the group’s systems depended on the customer’s systems. The custome...

Ngày tải lên: 14/08/2014, 14:20

... 686 29 Web Services 6 89 29. 1 The Basics 690 29. 1.1 Web Service Building Blocks 690 29. 1.2 The Webmaster Role 693 29. 1.3 Service-Level Agreements 694 29. 1.4 Web Service Architectures 694 29. 1.5 ... Customer’s Problem 392 15.1.2 Fix the Cause, Not the Symptom 393 15.1.3 Be Systematic 394 15.1.4 Have the Right Tools 395 15.2 The Icing 399 15.2.1 Better Tools...

Ngày tải lên: 14/08/2014, 14:20

... vendor and the release of the compatible new version from the second vendor. Also, relations between the two vendors may break down, and they may stop providing the interface between the two ... both products and rely on the interface between them. ❖ The Protocol versus the Product SAs need to understand the differ- ence between the protocol and the product...

Ngày tải lên: 14/08/2014, 14:20

... are on the network. Typi- cally, some software on a central server controls them all (Fine and Romig 199 0) and makes the consoles of the machines available by name, with au- thentication and some ... simplicity on the physical layer. You can build a very simple and therefore stable—flat physical network and then construct overlay networks on top of the solid base t...

Ngày tải lên: 14/08/2014, 14:20

... let them make the decision without having to understand the technology, and they were able to break the tie where the SAs disagreed. By the time the hardware was ready, the grid was complete. The ... availability of and access to the manufacturing control systems was of the utmost importance. A large networking hardware and software company, the crown jewels we...

Ngày tải lên: 14/08/2014, 14:20

... for three nines (99 .9 percent) (9 hours downtime per year), four nines (99 .99 percent) (1 hour per year), or five nines (99 .99 9 percent) (5 minutes per year). Six nines (99 .99 99 percent) (less ... 199 2; Ondishko 198 9; Schafer 199 2b; and Schwartz, Cottrell, and Dart 199 4). Harlander ( 199 4) and Miller and Morris ( 199 6) describe useful tools and the lessons learned...

Ngày tải lên: 14/08/2014, 14:20

... pretty labels for the tape covers. However, the system failed to reduce the thinking aspect of the job. The software did a grand job of issuing the right backup commands at the right time, used ... Understanding the basic relationship of storage devices to the operating system and to the file system gives you a richer understanding of the way that large s...

Ngày tải lên: 14/08/2014, 14:21

... the processing, leaving the CPU less loaded and better able to do the remaining work of moving the data off the disk, through the card, and onto the network. ❖ LAMP and Other Industry Terms Certain ... centralized and decentral- ized models for the system administration organization has an impact on customer support and the relationships between the SAs...

Ngày tải lên: 14/08/2014, 14:21

... Integrating Voice and Data Networks. Cisco Press. Kercheval, B. 199 9. DHCP: A Guide to Dynamic TCP/IP Network Configuration. Prentice Hall. Kernighan, B. W. and Pike, R. 199 9. The Practice of Programming. ... existing systems and improving them, scaling large systems into hu- mongous systems, and overhauling legacy systems and replacing them with newer systems. Infrastruct...

Ngày tải lên: 14/08/2014, 14:21