| Author |
Message |
Ben
Guest
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 Posted:
Fri Oct 01, 2004 3:00 am Post subject:
68 Pin Versus 80 Pin |
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Is there a difference between a 68 pin and an 80 pin cable? Is one better
or worse?
I am getting ready to buy a drive and have an opportunutity to get a Maxtor
15k drive. One has a 68 pin connector and one has an 80 pin. I want the
better or faster of the two. I know nothing of SCSI and presently don't have
any SCSI devices in my computer. I will run a single SCSI drive now and may
use a raid setup at a later date but I'm not sure. I fooled with SCSI a few
years back (SCSI CD writer). Never could get it to work. Hopefully this
experience will fare better.
Also, does anyone have a suggestion for a controller?
Thanks in advance.
:) |
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Ron Reaugh
Guest
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| Posted:
Fri Oct 01, 2004 4:16 am Post subject:
Re: 68 Pin Versus 80 Pin |
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"Ben" <Ben@Spambot_Address> wrote in message
news:du2dneFW3Yi1DcHcRVn-rQ@comcast.com...
| Quote: | Is there a difference between a 68 pin and an 80 pin cable?
|
There are no 80pin cables. There are 68 pin cables. There are 68 pin
drives. There are 80pin drives for use in a drive bay with an 80 pin
backplane. One can get a 68p-80p adapter to use an 80p drive on a 68p
cable.
| Quote: | Is one better
or worse?
|
Just different.
| Quote: | I am getting ready to buy a drive and have an opportunutity to get a
Maxtor
15k drive. One has a 68 pin connector and one has an 80 pin. I want the
better or faster of the two.
|
Same speed.
I know nothing of SCSI and presently don't have
| Quote: | any SCSI devices in my computer. I will run a single SCSI drive now and
may
use a raid setup at a later date but I'm not sure. I fooled with SCSI a
few
years back (SCSI CD writer). Never could get it to work. Hopefully this
experience will fare better.
|
Why get the SCSI HD as it wont offer any performance advantage over a top
SATA HD in single user workstation usage and will cost triple and then
there's the expensive SCSI card.
| Quote: | Also, does anyone have a suggestion for a controller?
|
Adaptec. |
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Dave Carrigan
Guest
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| Posted:
Fri Oct 01, 2004 10:09 pm Post subject:
Re: 68 Pin Versus 80 Pin |
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Ben wrote:
| Quote: | Is there a difference between a 68 pin and an 80 pin cable? Is one better
or worse?
I am getting ready to buy a drive and have an opportunutity to get a
Maxtor
15k drive. One has a 68 pin connector and one has an 80 pin. I want the
better or faster of the two. I know nothing of SCSI and presently don't
have any SCSI devices in my computer. I will run a single SCSI drive now
and may use a raid setup at a later date but I'm not sure. I fooled with
SCSI a few years back (SCSI CD writer). Never could get it to work.
Hopefully this experience will fare better.
|
The 80-pin connectors are just 68-pin connectors with 12 extra pins for
power and SCSI ID selection. The 80-pin drives are meant to be plugged into
systems such as raid boxes which have a backplane with 80-pin connectors.
You probably do not have such a thing. You can also buy adapters with an
80-pin port on one side and a 68 pin/molex power port on the other side so
that you can use an 80-pin device without the need for the backplane. If
you have a choice, go for the 68-pin device. |
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Ben
Guest
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| Posted:
Fri Oct 01, 2004 10:57 pm Post subject:
Re: 68 Pin Versus 80 Pin |
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Thanks for your help guys. :)
"Dave Carrigan" <dave@rudedog.org> wrote in message
news:10lr7bh7jsc601b@corp.supernews.com...
| Quote: | Ben wrote:
Is there a difference between a 68 pin and an 80 pin cable? Is one
better
or worse?
I am getting ready to buy a drive and have an opportunutity to get a
Maxtor
15k drive. One has a 68 pin connector and one has an 80 pin. I want the
better or faster of the two. I know nothing of SCSI and presently don't
have any SCSI devices in my computer. I will run a single SCSI drive now
and may use a raid setup at a later date but I'm not sure. I fooled with
SCSI a few years back (SCSI CD writer). Never could get it to work.
Hopefully this experience will fare better.
The 80-pin connectors are just 68-pin connectors with 12 extra pins for
power and SCSI ID selection. The 80-pin drives are meant to be plugged
into
systems such as raid boxes which have a backplane with 80-pin connectors.
You probably do not have such a thing. You can also buy adapters with an
80-pin port on one side and a 68 pin/molex power port on the other side so
that you can use an 80-pin device without the need for the backplane. If
you have a choice, go for the 68-pin device. |
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MC
Guest
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| Posted:
Wed Oct 13, 2004 12:03 am Post subject:
Re: 68 Pin Versus 80 Pin |
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| Quote: | Why get the SCSI HD as it wont offer any performance advantage over a top
SATA HD in single user workstation usage and will cost triple and then
there's the expensive SCSI card.
|
Although sustained transfers on SCSI vs. ATA are more or less on par
now (for a single drive, workstation-type config) I thought that a
SCSI boot drive (including OS, apps, and swapfile) still offered an
advantage over even SATA. I just bought a new system that has just
one drive: a SATA, but I was thinking of adding a SCSI drive and using
it for OS, apps, and swap. I thought that SCSI would multitask
better. Often, my older system (Duron 1000 with 384MB RAM, 576MB
swap) thrashed the disk periodically--and seemingly unnecessarily
(lots of physical memory left, drive is defragged, CPU isn't pegged).
I was under the understanding the SCSI would offer performance
improvements in situations like that, no?
Craig |
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Ron Reaugh
Guest
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| Posted:
Wed Oct 13, 2004 1:35 am Post subject:
Re: 68 Pin Versus 80 Pin |
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"MC" <howdy@dontspamme.com> wrote in message
news:nddom0t02e09nkl26j4iqel4bp638h49ph@4ax.com...
| Quote: | Why get the SCSI HD as it wont offer any performance advantage over a top
SATA HD in single user workstation usage and will cost triple and then
there's the expensive SCSI card.
Although sustained transfers on SCSI vs. ATA are more or less on par
now (for a single drive, workstation-type config) I thought that a
SCSI boot drive (including OS, apps, and swapfile) still offered an
advantage over even SATA.
|
Nope.
| Quote: | I just bought a new system that has just
one drive: a SATA,
|
A Raptor I assume. If not then you got an inferior drive.
| Quote: | but I was thinking of adding a SCSI drive and using
it for OS, apps, and swap. I thought that SCSI would multitask
better.
|
Nope, not significantly in single user workstation usage.
| Quote: | Often, my older system (Duron 1000 with 384MB RAM, 576MB
swap) thrashed the disk periodically--and seemingly unnecessarily
(lots of physical memory left, drive is defragged, CPU isn't pegged).
I was under the understanding the SCSI would offer performance
improvements in situations like that, no?
|
Nope, such thrashing has little to do with the HD but is a function of the
virtual memory manager assuming that is what's thrashing. THAT is a
doubtful assumption given you said there is lots of RAM. So what was the
intense disk I/O? |
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MC
Guest
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| Posted:
Thu Oct 14, 2004 1:26 am Post subject:
Re: 68 Pin Versus 80 Pin |
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| Quote: | I just bought a new system that has just
one drive: a SATA,
A Raptor I assume. If not then you got an inferior drive.
|
I got an inferior drive: a Samsung. My mistake, I guess.
| Quote: | but I was thinking of adding a SCSI drive and using
it for OS, apps, and swap. I thought that SCSI would multitask
better.
Nope, not significantly in single user workstation usage.
Nope, such thrashing has little to do with the HD but is a function of the
virtual memory manager assuming that is what's thrashing. THAT is a
doubtful assumption given you said there is lots of RAM. So what was the
intense disk I/O?
|
To be honest, I don't recall. Every once in a while though, my disk
would get busy and my system wouldn't be as responsive as I thought it
should be, and I sat there wondering why, given it had plenty of RAM. |
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Brian {Hamilton Kelly}
Guest
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| Posted:
Thu Oct 14, 2004 6:30 am Post subject:
Re: 68 Pin Versus 80 Pin |
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On Wednesday, in article
<5c6rm0ho5unr5paasjuqtj1ji2sfndo6eh@4ax.com>
howdy@dontspamme.com "MC" wrote:
[Previous posters' attributions lost]
| Quote: | Nope, such thrashing has little to do with the HD but is a function of the
virtual memory manager assuming that is what's thrashing. THAT is a
doubtful assumption given you said there is lots of RAM. So what was the
intense disk I/O?
To be honest, I don't recall. Every once in a while though, my disk
would get busy and my system wouldn't be as responsive as I thought it
should be, and I sat there wondering why, given it had plenty of RAM.
|
Anti-virus scan? M$'s bloody FastFind performing a scan?
--
Brian {Hamilton Kelly} bhk@dsl.co.uk
"I don't use Linux. I prefer to use an OS supported by a large multi-
national vendor, with a good office suite, excellent network/internet
software and decent hardware support." |
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MC
Guest
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| Posted:
Thu Oct 14, 2004 11:27 pm Post subject:
Re: 68 Pin Versus 80 Pin |
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| Quote: | Nope, such thrashing has little to do with the HD but is a function of the
virtual memory manager assuming that is what's thrashing. THAT is a
doubtful assumption given you said there is lots of RAM. So what was the
intense disk I/O?
To be honest, I don't recall. Every once in a while though, my disk
would get busy and my system wouldn't be as responsive as I thought it
should be, and I sat there wondering why, given it had plenty of RAM.
Anti-virus scan? M$'s bloody FastFind performing a scan?
|
FastFind, no way! Anti-virus, maybe (good point, although it's not
doing a full system scan, it would just be scanning the current files
that I'm reading/writing).
I just thought it was Windows swapping unnecessarily, and trying to
read/write to the disk at an app. level at the same time. I figured
that if the OS wants to do IO and an app wants to as well, or when two
apps want to do IO, SCSI will outperform ATA (even SATA). Poor
assumption?
Craig |
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