{"id":364,"date":"2020-08-18T19:23:47","date_gmt":"2020-08-18T20:23:47","guid":{"rendered":"http:\/\/www.linux-tutorial.info\/?page_id=77"},"modified":"2020-08-22T19:26:19","modified_gmt":"2020-08-22T20:26:19","slug":"this-is-the-page-title-toplevel-197","status":"publish","type":"page","link":"http:\/\/www.linux-tutorial.info\/?page_id=364","title":{"rendered":"SCSI Devices"},"content":{"rendered":"\n<title>SCSI Devices<\/title>\n<p>\nIf the <glossary>SCSI<\/glossary>\nis the first device you are adding to the <glossary>host<\/glossary>\nadapter, you need to configure that <glossary>host adapter<\/glossary>\ninto the system. If you are adding a second host adapter (or anything after that), you will have to\ndisable  the <glossary>BIOS<\/glossary> on it. Remember from our discussion on SCSI in the chapter on\nhardware that the system will look for a bootable hard disk. If the BIOS on the second host adapter\nis enabled, the system may try to <glossary>boot<\/glossary> from this one. If it is the same model\nhost adapter, it will probably have to change the base <glossary>address<\/glossary>,\n<glossary>IRQ<\/glossary>,  and <glossary>DMA<\/glossary> as well.\n<\/p>\n<concept id=\"\" description=\"Remember that every device on the SCSI bus is identifed by an ID, inclduing the host adapater\" \/>\n<p>\nRemember that every device on the <glossary>SCSI<\/glossary>\n<glossary>bus<\/glossary>,\nincluding the <glossary>host adapter<\/glossary>\nitself, is identified by a SCSI ID. SCSI IDs range from 7 on standard SCSI and 15 on a\nWide SCSI bus. Regardless of what type it is, the <glossary>host adapter<\/glossary> is almost exclusively set to ID 7. It is this ID that is used to identify devices on the bus, not their\nlocation in relation to the host adapter.\n<\/p>\n<p>\nBecause there is typically no real need to configure a <glossary>SCSI<\/glossary>\n<glossary>host<\/glossary>\nadapter unless something is attached, the only &#8220;official&#8221; way to add a <glossary>host adapter<\/glossary>\nto the system is to go through the configure script. If the system recognizes that you do not have a\nconfigured  host adapter, you will be prompted to add one.\n<\/p>\n<p>\nIf you are adding a device to an existing <glossary>host<\/glossary>\nadapter, the driver for that <glossary>host adapter<\/glossary>\nis already linked into the <glossary>kernel<\/glossary>.\n(At least we hope so.) If you are adding new kind of device onto the new host adapter, the driver\nmay not be configured. Watch carefully as the system boots to see whether the device is recognized.\nIf it is not, you will need to run the configure script.\n<\/p>\n<p>\nHere is one example in which I have first hand experience about not paying attention to what is supported\nand what is not. The distribution you have may provide a disk image that has support for a particular <glossary>host<\/glossary>\nadapter (or any driver for that matter). However, this does not mean the <glossary>kernel<\/glossary>\nhas the support.\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SCSI Devices If the SCSI is the first device you are adding to the host adapter, you need to configure that host adapter into the system. If you are adding a second host adapter (or anything after that), you will &hellip; <a href=\"http:\/\/www.linux-tutorial.info\/?page_id=364\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-364","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=364"}],"version-history":[{"count":1,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/364\/revisions"}],"predecessor-version":[{"id":688,"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=\/wp\/v2\/pages\/364\/revisions\/688"}],"wp:attachment":[{"href":"http:\/\/www.linux-tutorial.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}