The Practice of System and Network Administration Second Edition phần 1 docx

... Servers 11 5 5 .1. 11 Centralization and Standards 11 6 5 .1. 12 Performance 11 6 5 .1. 13 Monitoring 11 9 5 .1. 14 Service Rollout 12 0 5.2 The Icing 12 0 5.2 .1 Dedicated Machines 12 0 5.2.2 Full Redundancy 12 2 5.2.3 ... xiii 11 .2 The Icing 315 11 .2 .1 Make Security Pervasive 315 11 .2.2 Stay Current: Contacts and Technologies 316 11 .2.3 Produce Metrics 317 11 .3...

Ngày tải lên: 14/08/2014, 14:20

... 23 .1. 6. 7 .1. 13 Monitoring You need network monitoring to build a fast, reliable network; to scale the network in advance of growing demand; and to maintain its reliability. 7 .1 The Basics 211 after the ... and position the piece of equipment at the preferred height in the rack. After the wheels are locked, the lift is stable, and the equipment can be mo...

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... incident effectively. 11 .1 The Basics 313 connect to the company, because of the customer’s policies and facilities. If the offices cannot use one of the officially sanctioned methods, they may set up ... availability of and access to the manufacturing control systems was of the utmost importance. A large networking hardware and software company, the crown je...

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... include DNS, email, authentication services, network connectivity, and printing. 1 These services are the most critical, and they are the most visible if they fail. Other typical services are the various ... useful to talk with other SAs to find out which vendors they use and which ones they avoid. The System Administrators’ Guild (SAGE) (www.sage.org) and the League...

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... half day of testing before he went home. There was no lunch hour at that company. The cafeteria was open from 11 :15 to 1: 30, and at least a third of their customers were active on the network ... 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...

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... 19 92; Ondishko 19 89; Schafer 19 92b; and Schwartz, Cottrell, and Dart 19 94). Harlander (19 94) and Miller and Morris (19 96) describe useful tools and the lessons learned from using them. Centralizing ... not choose the standard? Using pull instead of push is using the carrot, not the stick, get a mule to move forward. 20 .1 The Basics 4 91 write the message a...

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... 0.92 16 4.00 0.40 0.40 0.96 0.96 0.96 17 4.00 0.44 0.44 1. 00 1. 00 1. 00 18 4.00 0.48 0.48 1. 04 1. 04 1. 04 19 4.00 0.52 0.52 1. 08 1. 08 1. 08 20 4.00 0.56 0.56 1. 12 1. 12 1. 12 21 4.00 0.60 0.60 1. 16 1. 16 ... 0.60 0.60 1. 16 1. 16 1. 16 42-day total 16 8 42 36.96 39.2 41. 16 47.04 Worst case 10 0% 25% 22% 23% 25% 28% Best case 455% 11 4% 10 0% 10 6% 11 1%...

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... 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...

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... 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...

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... Administrators. O’Reilly. Limoncelli, T. A., and C. Hogan. 20 01. The Practice of System and Network Administration. Addison-Wesley. 910 Epilogue the lessons and values that are important to us. We ... 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