Re: 80 pin SCSI hard drives.
Alfredo Finelli wrote: I have 80 pin SCSI discs mounted in hot-swappable trays on a SCSI backplane which takes care also of powering them up and of SCSI termination. This is one way of using them. I also have the same drives in a different system connected to normal SCSI LVD cable using small adaptors which have an 80 pin receptacle on one side and a 68 pin SCSI connector plus 4 pin molex power connector on the other, as well as jumpers to define SCSI id. In this second case you have to provide the required termination of the SCSI bus (e.g. using the right terminated SCSI cable). So you can confirm that using these adaptors works OK? When I bought my SCSI drive (off eBay) there were more SCA drives for sale than 68-pin but doing some research about 80-68 pin adaptors I found a lot of people saying not to use them, including Adaptec: This from Adaptec's ASK knowledgebase http://tinyurl.com/b3ofa Although there are adapters on the market converting 80 pin to 68 pin they are not supported by Adaptec or the hard drive manufacturers. These convertors can cause loss of signal integrity that may result in connectivity issues and data loss. This put me off getting a SCA drive. Now I'm looking for a another drive and SCA ones seem to be cheaper on eBay. Regards, Mark ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: 80 pin SCSI hard drives.
Mark Ovens writes: I also have the same drives in a different system connected to normal SCSI LVD cable using small adaptors which have an 80 pin receptacle on one side and a 68 pin SCSI connector plus 4 pin molex power connector on the other, as well as jumpers to define SCSI id. So you can confirm that using these adaptors works OK? I have a AHA-2940U2W whose connection to a SEAGATE SX150176LC involves a third party adapter. Running over a year, zero observed problems. Robert Huff ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: 80 pin SCSI hard drives.
In the last episode (Feb 17), Robert Huff said: Mark Ovens writes: I also have the same drives in a different system connected to normal SCSI LVD cable using small adaptors which have an 80 pin receptacle on one side and a 68 pin SCSI connector plus 4 pin molex power connector on the other, as well as jumpers to define SCSI id. So you can confirm that using these adaptors works OK? I have a AHA-2940U2W whose connection to a SEAGATE SX150176LC involves a third party adapter. Running over a year, zero observed problems. Same here. I think we've used SCA adapters from three different vendors and never had problems. -- Dan Nelson [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: 80 pin SCSI hard drives.
Mark, The problem you have with the 80-pin to 68-pin adapters is this. A lot of the el-cheapo adapters do not terminate the unconnected data lines, that is when you get instability. The better quality adapters do terminate them and don't have instability problems. Ted -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Mark Ovens Sent: Friday, February 17, 2006 7:30 AM To: freebsd-questions@freebsd.org Subject: Re: 80 pin SCSI hard drives. Alfredo Finelli wrote: I have 80 pin SCSI discs mounted in hot-swappable trays on a SCSI backplane which takes care also of powering them up and of SCSI termination. This is one way of using them. I also have the same drives in a different system connected to normal SCSI LVD cable using small adaptors which have an 80 pin receptacle on one side and a 68 pin SCSI connector plus 4 pin molex power connector on the other, as well as jumpers to define SCSI id. In this second case you have to provide the required termination of the SCSI bus (e.g. using the right terminated SCSI cable). So you can confirm that using these adaptors works OK? When I bought my SCSI drive (off eBay) there were more SCA drives for sale than 68-pin but doing some research about 80-68 pin adaptors I found a lot of people saying not to use them, including Adaptec: This from Adaptec's ASK knowledgebase http://tinyurl.com/b3ofa Although there are adapters on the market converting 80 pin to 68 pin they are not supported by Adaptec or the hard drive manufacturers. These convertors can cause loss of signal integrity that may result in connectivity issues and data loss. This put me off getting a SCA drive. Now I'm looking for a another drive and SCA ones seem to be cheaper on eBay. Regards, Mark ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.10/263 - Release Date: 2/16/2006 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
80 pin SCSI hard drives.
I've obtained two SCSI hard drives made by Maxtor that have 80 pin connectors and no power connector port. This isn't necessarily relevant to FreeBSD accept that i'm planning on using them in a FreeBSD installation. I'm only aware of 50 pin SCSI and 68 pin SCSI. I've tried to contact Maxtor to get advice on a PCI adapter and cables to use with these units but haven't gotten a reply. Can any one give me some info on how to set these drives up hardware wise? Or if they can be used, maybe I made a mistake getting them, but they are 18GB 15 k drives and were $75 apiece from Tiger Direct. two of them will give me 36 GB to use for a web server /usr and /var partitions. And ill use SATA drives for RAID back up. Thank you in advance. JK ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: 80 pin SCSI hard drives.
At 06:21 PM 1/16/2006, je killen wrote: I've obtained two SCSI hard drives made by Maxtor that have 80 pin connectors and no power connector port. This isn't necessarily relevant to FreeBSD accept that i'm planning on using them in a FreeBSD installation. I'm only aware of 50 pin SCSI and 68 pin SCSI. I've tried to contact Maxtor to get advice on a PCI adapter and cables to use with these units but haven't gotten a reply. Can any one give me some info on how to set these drives up hardware wise? Or if they can be used, maybe I made a mistake getting them, but they are 18GB 15 k drives and were $75 apiece from Tiger Direct. two of them will give me 36 GB to use for a web server /usr and /var partitions. And ill use SATA drives for RAID back up. You need an adapter to use those drives. Something like this: http://www.bixnet.com/sca80pinscsi.html If you look around a bit you can probably find some cheaper. The link above was from a quick search, but there are a lot of places that sell the adapters. -Glenn Thank you in advance. JK ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: 80 pin SCSI hard drives.
On Tuesday 17 January 2006 03:21, je killen wrote: I've obtained two SCSI hard drives made by Maxtor that have 80 pin connectors and no power connector port. This isn't necessarily relevant to FreeBSD accept that i'm planning on using them in a FreeBSD installation. I'm only aware of 50 pin SCSI and 68 pin SCSI. I've tried to contact Maxtor to get advice on a PCI adapter and cables to use with these units but haven't gotten a reply. Can any one give me some info on how to set these drives up hardware wise? Hi, I have 80 pin SCSI discs mounted in hot-swappable trays on a SCSI backplane which takes care also of powering them up and of SCSI termination. This is one way of using them. I also have the same drives in a different system connected to normal SCSI LVD cable using small adaptors which have an 80 pin receptacle on one side and a 68 pin SCSI connector plus 4 pin molex power connector on the other, as well as jumpers to define SCSI id. In this second case you have to provide the required termination of the SCSI bus (e.g. using the right terminated SCSI cable). alfredo ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: 80 pin SCSI hard drives.
There are called sca or single connect if I'm not wrong... Most high end servers (sun, hps, ibm, compaq, etc used those) They are basically 68 pins drive (can be U80, U160 or U320) so you just need a regular se scsi adapter for them. The only difference is that the power is coming though the connector, scsi ids are also set by the backplane instead of jumpers at the back of the drive... If you don't plan to put them on a server that has those backplane, you can buy a converter from 68 pins to 80 like this one for example: http://cgi.ebay.com/INTERNAL-SCSI-3-SCA80-pin-to-SCSI-2-IDC50M_W0QQitemZ5853652732QQcategoryZ41993QQssPageNameZWDVWQQrdZ1QQcmdZViewItem http://cgi.ebay.com/SCA-adapter-80-pin-to-SCSI-I-II-III-68-or-50-Converter_W0QQitemZ8750421043QQcategoryZ11160QQrdZ1QQcmdZViewItem http://cgi.ebay.com/414-SCSI-Adapter-SCA-80-to-68-to-50-PIN-GIFT_W0QQitemZ8751171361QQcategoryZ167QQrdZ1QQcmdZViewItem There is a bunch on ebay, just seach for sca 80 it may be hard to fit in your case, just make sure it fits :) At 21:21 2006-01-16, je killen wrote: I've obtained two SCSI hard drives made by Maxtor that have 80 pin connectors and no power connector port. This isn't necessarily relevant to FreeBSD accept that i'm planning on using them in a FreeBSD installation. I'm only aware of 50 pin SCSI and 68 pin SCSI. I've tried to contact Maxtor to get advice on a PCI adapter and cables to use with these units but haven't gotten a reply. Can any one give me some info on how to set these drives up hardware wise? Or if they can be used, maybe I made a mistake getting them, but they are 18GB 15 k drives and were $75 apiece from Tiger Direct. two of them will give me 36 GB to use for a web server /usr and /var partitions. And ill use SATA drives for RAID back up. Thank you in advance. JK ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
