... 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 ... Administrators. O’Reilly.
Limoncelli, T. A., and C. Hogan. 2001. The Practice of System and Network Administration.
Addison-Wesley.
910 Epilogue
the lessons and va...
... lot of notes. We’ve smoothed
the rough edges and filled some of the major holes.
The first edition garnered a lot of positive reviews and buzz. We were
very honored. However, the passing of time ... time they
appear, regardless of the operating system (OS), brand of computer, or type of
environment. This book is unique because it looks at system administrati...
... 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...
... 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 to give the ap-
pearance of the more ... 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....
... 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...
... 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...
... 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...
... 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...
... 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...
... 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...