This is part of The Pile, a partial archive of some open source mailing lists and newsgroups.
Date: Thu, 4 Jan 2001 18:05:28 -0800 To: svlug@svlug.org Subject: Re: [svlug] SCSI cable needed From: Rick Moen <rick@linuxmafia.com> begin Mike O'Neill quotation: > I have a 50-pin internal scsi connection that I need to take externally. Not necessarily a good idea. Fast20 single-ended SCSI becomes out of spec if you exceed 1.5 meters total SCSI-chain length. You may already be pushing it. > The external connector can be just about anything since I could use > converters to get the final connector needed. The problem is that I cannot > find this anywhere. You can look up the official names of the connectors commonly used for SCSI external connectors -- but the problem is that the vendors will just stare blankly at you, when you _use_ those names. I therefore tend to pull the catalogue off the counter and point, instead. There are SCA connectors for hot-swap (_not_ what you want). There are DD-50P, Mini Micro (aka "High Density"), and DD-50SA connectors. There are so-called "Centronics" connectors (probably the most-common for the SCSI-2 generation of parts). There are so-called "wide-SCSI-3 P" connectors (not what you want). There are IBM "Burndy" no-I'm-not-really-SCSI connectors. There are thankfully long-gone Apple / Future Domain / Trantor DB-25S connectors <shudder>. Aren't you glad you asked? You probably want "Centronics" SCSI hardware. > Do you have any suggestions for where I should look? In the comp.periphs.scsi FAQ: http://www.landfield.com/faqs/scsi-faq/part1/ If local to Sunnyvale, you can probably find what you want at Action Computers or Halted Specialties. > For clarification, U160 (LVD 68 pin) connectors are _not_ backward > compatable with say scsi 2 or 3, right? Thanks. -m No and yes: There are converters. And the term "SCSI 3" probably doesn't mean what you think it does. See the FAQ, for the gruesome details. === Date: Thu, 4 Jan 2001 22:36:13 -0800 To: svlug@svlug.org Subject: Re: [svlug] SCSI cable needed From: Rick Moen <rick@linuxmafia.com> begin Mike O'Neill quotation: > I know what your thinking. Why in hell would he want to do that? The thing > is that I have an unused channel that could be put to use with a legacy > device. -m Put said device inside the main system box case. Add it to the internal SCSI ribbon connector. And you're done. Unless you're talking about a flatbed scanner or such. === Date: Thu, 4 Jan 2001 18:05:28 -0800 To: svlug@svlug.org Subject: Re: [svlug] SCSI cable needed From: Rick Moen <rick@linuxmafia.com> begin Mike O'Neill quotation: > I have a 50-pin internal scsi connection that I need to take externally. Not necessarily a good idea. Fast20 single-ended SCSI becomes out of spec if you exceed 1.5 meters total SCSI-chain length. You may already be pushing it. > The external connector can be just about anything since I could use > converters to get the final connector needed. The problem is that I cannot > find this anywhere. You can look up the official names of the connectors commonly used for SCSI external connectors -- but the problem is that the vendors will just stare blankly at you, when you _use_ those names. I therefore tend to pull the catalogue off the counter and point, instead. There are SCA connectors for hot-swap (_not_ what you want). There are DD-50P, Mini Micro (aka "High Density"), and DD-50SA connectors. There are so-called "Centronics" connectors (probably the most-common for the SCSI-2 generation of parts). There are so-called "wide-SCSI-3 P" connectors (not what you want). There are IBM "Burndy" no-I'm-not-really-SCSI connectors. There are thankfully long-gone Apple / Future Domain / Trantor DB-25S connectors <shudder>. Aren't you glad you asked? You probably want "Centronics" SCSI hardware. > Do you have any suggestions for where I should look? In the comp.periphs.scsi FAQ: http://www.landfield.com/faqs/scsi-faq/part1/ If local to Sunnyvale, you can probably find what you want at Action Computers or Halted Specialties. > For clarification, U160 (LVD 68 pin) connectors are _not_ backward > compatable with say scsi 2 or 3, right? Thanks. -m No and yes: There are converters. And the term "SCSI 3" probably doesn't mean what you think it does. See the FAQ, for the gruesome details. === Date: Thu, 4 Jan 2001 22:36:13 -0800 To: svlug@svlug.org Subject: Re: [svlug] SCSI cable needed From: Rick Moen <rick@linuxmafia.com> begin Mike O'Neill quotation: > I know what your thinking. Why in hell would he want to do that? The thing > is that I have an unused channel that could be put to use with a legacy > device. -m Put said device inside the main system box case. Add it to the internal SCSI ribbon connector. And you're done. Unless you're talking about a flatbed scanner or such. ===