Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

dpt(4freebsd)


NAME

     dpt --- DPT RAID Controller SCSI driver

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

       device scbus
       device dpt

       For one or more EISA cards:
       device eisa

       For one or more PCI cards:
       device pci

       To allow PCI adapters to use memory mapped I/O if enabled:
       options DPT_ALLOW_MEMIO

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

       dpt_load="YES"

DESCRIPTION

     The dpt driver supports DPT RAID SCSI controllers.

     SmartRAID (PM3???) are "Enterprise" class cards, and SmartCache (PM2???)
     cards are in the "Workstation" class.  The Gen 4 Smart Cache IV products
     were a re-issue of the Gen 3 utilizing upgraded (and cheaper to produce)
     silicon.  The PM3334 (Smart RAID III) was not revamped as there was no
     upgraded silicon (68040 processor) and it was using the best DPT made.
     Note there has been customer confusion over the faster enterprise class
     card supported by this driver being an older generation.  The Gen5 cards
     are supported by the asr(4) driver.

HARDWARE

     The dpt driver provides support for the following RAID adapters:

     *   DPT Smart Cache Plus
     *   Smart Cache II (PM2?2?, PM2022 [EISA], PM2024/PM2124 [PCI]) (Gen2)
     *   Smart RAID II (PM3?2?, PM3021, PM3222)
     *   Smart Cache III (PM2?3?)
     *   Smart RAID III (PM3?3?, PM3332 [EISA], PM3334UW [PCI]) (Gen3)
     *   Smart Cache IV (PM2?4?, PM2042 [EISA], PM2044/PM2144 [PCI]) (Gen4)
     *   Smart RAID IV

SEE ALSO

     asr(4), cd(4), ch(4), da(4), sa(4), scsi(4)

HISTORY

     The dpt driver first appeared in FreeBSD 2.2.6.

AUTHORS

     The dpt driver was written by Simon Shapiro and ported to the CAM SCSI
     system by Justin T. Gibbs.



Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.



Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.



Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.



Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.


birds banner