September 2005
Intermediate to advanced
950 pages
113h 41m
English
book
IBM TotalStorage: SAN Product, Design, and Optimization Guide
by Jon Tate, Jim Kelly, Pauli Rämö, Leos Stehlik
Content preview from IBM TotalStorage: SAN Product, Design, and Optimization Guide
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224 IBM TotalStorage: SAN Product, Design, and Optimization Guide
bandwidth, and arbitration overheads. A maximum of two servers is advisable on
a loop. If one server fails and has to reboot, causing a new LIP, it will
momentarily interrupt the whole loop. These are all the main factors why hubs
and FC-AL in general are rarely used in SANs today.
FC-SW, on the other hand, scales performance as you add nodes. This does not
apply to Inter Switch Links (ISLs). ISLs do not add bandwidth between end
nodes because ISLs reduce the number of end to end connections. Secure
zones and masked LUNs can be created so that only authorized servers can
access specific information. FC-SW provides comprehensive, flexible growth
options.
6.3.2 Scalability
Any design ...
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