🚀 go-pugleaf

UUASC
                 UNIX Users Association of Southern California
                                  May Meeting

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                                RAID Technology
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                            Monday, May 13, 7-9 pm
                                 Corollary Inc
                              2802 Kelvin, Irvine
                    (one block north of Jamboree and Main)

As processor speeds have increased dramatically over the past few years, the
I/O speeds of most disk systems have become a greater bottleneck to improved
overall system performance. (While CPU speeds have increased at the rate of
close to 50% per year, disk performance has increased by only 10-20% per
year.) Moreover, as the number of disks in a system increases, the likeli-
hood of a disk failure also increases, and the traditional approach of
taking a failed disk off-line and restoring it from a back-up is not
adequate for a system with high availability requirements.

RAID (redundant array of inexpensive disks) technology has been developed to 
address these performance and reliability issues. These arrays can provide
both higher I/O rates and greater reliability than individual drives.
Several RAID "levels" have been defined, each describing different disk
array configurations with different performance characteristics. At the
UUASC May meeting, member Marc Furon will review the concepts of RAID, the
varying RAID levels, and the types of RAID systems available in the market
today.

The UUASC is for all persons using UNIX either personally or professionally,
or interested in learning more about UNIX. We recognize all varieties of
UNIX, including (without prejudice) SCO, Linux, SVr4, Solaris, AIX, and OSF.
This is a good place to meet others with similar interests and broaden your
skills and knowledge. Generally, meetings include a technical presentation
on a hardware or software topic of current interest to the UNIX community
and a round-table discussion of current topics of interest to the group.
We are always looking for interesting presentations and your suggestions
are most welcome.

Please join us this month and bring along your friends or co-workers. Also,
please forward this announcement to others who may be interested and feel
free to post it on BBSs, both electronic and physical. If you receive more
than one announcement by email, please let us know so we can keep our lists
current. Thanks for listening.

              #               |
              #               |                  Enter from Kelvin, go
              #          -----+-x-----Kelvin     around the building on
              #               | Corollary        the Jamboree side, the
              #               |                  entrance to the meeting
              #    -----------+----------Main    place is at the rear
              #               |                  corner.
     405======#==============================
              #               |
             55           Jamboree

        Dave Close - Compata - Costa Mesa, California - +1 714 434 7359
                  dave@UUASC.org | dhclose@alumni.caltech.edu