The Practice of System and Network Administration Second Edition phần 5 pps

... 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

... 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

... 55 0 23.1.7 Automation 55 2 23.1.8 Basic Monitoring 55 2 23.1.9 Redundancy 55 3 23.1.10 Scaling 55 4 23.1.11 Security Issues 55 6 23.1.12 Communication 55 7 23.2 The Icing 55 8 23.2.1 Encryption 55 9 23.2.2 Email ... 391 15. 1 The Basics 391 15. 1.1 Learn the 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...

Ngày tải lên: 14/08/2014, 14:20

... required features, and you might be tempted to reject the bid. On the other hand, customers who understand the value of simplicity may be willing to forego those features and gain the higher reliability. 5. 1 .5 ... authentication and authorization system. The system is designed with three components: the box that handles the remote connections, the server that ma...

Ngày tải lên: 14/08/2014, 14:20

... the machines and lighting in the data center, the HVAC system, the UPS charging, the phone switches, the SA work area, and the customer service center. The security-access syste mis also on the ... 193 Multiple links Multiple links German office French office United Kingdom office Bulgarian office Austin office New Jersey office Denver office Office in Singapore Office...

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

... when the cost model showed the systems to cost about the same per gigabyte of usable storage, the dedicated file servers had an advantage over the old systems: consistency and support. The old systems ... mishmash of various manufacturers for the host; for the RAID controllers; and for the disk drives, cables, network interfaces, and, in some cases, even the rac...

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

... existing systems and improving them, scaling large systems into hu- mongous systems, and overhauling legacy systems and replacing them with newer systems. Infrastructure Builders are proud of their ... 664 “An Analysis of UNIX System Configuration” (Evard), 41–42 Anonymizer service, 3 35 Anonymizing redirection service, 258 ANS.1 format, 52 9 Antispam software, 55 0 Anti-viru...

Ngày tải lên: 14/08/2014, 14:21