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Howard Kaikow
Guest
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 Posted: Tue May 22, 2007 9:26 pm Post subject: Adaptec 2940UW |
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| What is the maximum size hard drive that can be handled by the 2940UW? |
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Robert Heller
Guest
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| Posted: Tue May 22, 2007 9:46 pm Post subject: Re: Adaptec 2940UW |
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At Tue, 22 May 2007 12:26:06 -0400 "Howard Kaikow" <kaikow@standards.com> wrote:
| Quote: |
What is the maximum size hard drive that can be handled by the 2940UW?
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A 2940UW can handle as large a drive as the SCSI protocol can handle.
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
That said, there are any number of possible limitations with either the
BIOS of some *older* PCs and/or the driver software running on various
operating systems that might have some limits on the maximum size hard
drive(s) that can be supported by the host system the 2940UW is plugged
into.
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Linux Installation and Administration
http://www.deepsoft.com/ -- Web Hosting, with CGI and Database
heller@deepsoft.com -- Contract Programming: C/C++, Tcl/Tk |
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Eric Gisin
Guest
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| Posted: Tue May 22, 2007 9:59 pm Post subject: Re: Adaptec 2940UW |
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"Robert Heller" <heller@deepsoft.com> wrote in message
news:47b77$46531e67$404a99a1$25863@news.news-service.com...
| Quote: |
A 2940UW can handle as large a drive as the SCSI protocol can handle.
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
Correct, but external RAID can be bigger than 2TB. |
| Quote: | That said, there are any number of possible limitations with either the
BIOS of some *older* PCs and/or the driver software running on various
operating systems that might have some limits on the maximum size hard
drive(s) that can be supported by the host system the 2940UW is plugged
into.
Nonsense. The PC BIOS has no effect on SCSI. Every OS supports 2TB. |
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Robert Heller
Guest
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| Posted: Tue May 22, 2007 11:44 pm Post subject: Re: Adaptec 2940UW |
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At Tue, 22 May 2007 09:59:17 -0700 "Eric Gisin" <gisin@uniserve.com> wrote:
| Quote: |
"Robert Heller" <heller@deepsoft.com> wrote in message
news:47b77$46531e67$404a99a1$25863@news.news-service.com...
A 2940UW can handle as large a drive as the SCSI protocol can handle.
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
Correct, but external RAID can be bigger than 2TB.
That said, there are any number of possible limitations with either the
BIOS of some *older* PCs and/or the driver software running on various
operating systems that might have some limits on the maximum size hard
drive(s) that can be supported by the host system the 2940UW is plugged
into.
Nonsense. The PC BIOS has no effect on SCSI. Every OS supports 2TB.
|
I was thinking of *older* (obsolete) BIOSs & O/Ss. -- BIOSs
*without* LBA32 support and MS-DOS-based O/Ss (eg Win3.11 though Win98).
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Linux Installation and Administration
http://www.deepsoft.com/ -- Web Hosting, with CGI and Database
heller@deepsoft.com -- Contract Programming: C/C++, Tcl/Tk |
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Folkert Rienstra
Guest
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| Posted: Wed May 23, 2007 3:01 am Post subject: Re: Adaptec 2940UW |
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"Robert Heller" <heller@deepsoft.com> wrote in message news:47b77$46531e67$404a99a1$25863@news.news-service.com
| Quote: | At Tue, 22 May 2007 12:26:06 -0400 "Howard Kaikow" <kaikow@standards.com> wrote:
What is the maximum size hard drive that can be handled by the 2940UW?
A 2940UW can handle as large a drive as the SCSI protocol can handle.
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
That said, there are any number of possible limitations with either the
BIOS of some *older* PCs
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Nonsense, the 2940UW comes with it's own BIOS.
| Quote: | and/or the driver software
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'Driver software', interesting.
| Quote: | running on various operating systems that might have some limits on the
maximum size hard drive(s) that can be supported by the host system
the 2940UW is plugged into.
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Waffle. |
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Folkert Rienstra
Guest
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| Posted: Wed May 23, 2007 3:02 am Post subject: Re: Adaptec 2940UW |
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"Eric Gisin" <gisin@uniserve.com> wrote in message news:1179853835.584524@netadmin1.interbaun.net
| Quote: | "Robert Heller" <heller@deepsoft.com> wrote in message
news:47b77$46531e67$404a99a1$25863@news.news-service.com...
A 2940UW can handle as large a drive as the SCSI protocol can handle.
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
Correct, but external RAID can be bigger than 2TB.
|
So how does SCSI handle that?
| Quote: |
That said, there are any number of possible limitations with either the
BIOS of some *older* PCs and/or the driver software running on various
operating systems that might have some limits on the maximum size hard
drive(s) that can be supported by the host system the 2940UW is plugged
into.
Nonsense. The PC BIOS has no effect on SCSI. Every OS supports 2TB. |
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Folkert Rienstra
Guest
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| Posted: Wed May 23, 2007 3:04 am Post subject: Re: Adaptec 2940UW |
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"Robert Heller" <heller@deepsoft.com> wrote in message news:5b036$46533a1e$404a99a1$20665@news.news-service.com
| Quote: | At Tue, 22 May 2007 09:59:17 -0700 "Eric Gisin" <gisin@uniserve.com> wrote:
"Robert Heller" <heller@deepsoft.com> wrote in message
news:47b77$46531e67$404a99a1$25863@news.news-service.com...
A 2940UW can handle as large a drive as the SCSI protocol can handle.
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
Correct, but external RAID can be bigger than 2TB.
That said, there are any number of possible limitations with either the
BIOS of some *older* PCs and/or the driver software running on various
operating systems that might have some limits on the maximum size hard
drive(s) that can be supported by the host system the 2940UW is plugged
into.
Nonsense. The PC BIOS has no effect on SCSI. Every OS supports 2TB.
I was thinking of *older* (obsolete) BIOSs & O/Ss. -- BIOSs
*without* LBA32 support and MS-DOS-based O/Ss (eg Win3.11 though Win98).
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Bwahahah. Heller on a roll again. |
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Eric Gisin
Guest
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| Posted: Wed May 23, 2007 3:20 am Post subject: Re: Adaptec 2940UW |
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"Folkert Rienstra" <see_reply-to@myweb.nl> wrote in message
news:46536f63$0$97234$892e7fe2@authen.yellow.readfreenews.net...
| Quote: | "Eric Gisin" <gisin@uniserve.com> wrote in message news:1179853835.584524@netadmin1.interbaun.net
"Robert Heller" <heller@deepsoft.com> wrote in message
news:47b77$46531e67$404a99a1$25863@news.news-service.com...
A 2940UW can handle as large a drive as the SCSI protocol can handle.
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
Correct, but external RAID can be bigger than 2TB.
So how does SCSI handle that?
Why do you ask? |
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Howard Kaikow
Guest
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| Posted: Wed May 23, 2007 4:25 pm Post subject: Re: Adaptec 2940UW |
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| Thanx. |
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Mike Walsh
Guest
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| Posted: Thu May 24, 2007 1:49 am Post subject: Re: Adaptec 2940UW |
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Win98, WinNT and Win2k have a 128 GB limit. Older OSs have a 8 GB limit.
Eric Gisin wrote:
| Quote: |
Nonsense. The PC BIOS has no effect on SCSI. Every OS supports 2TB.
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--
Mike Walsh
West Palm Beach, Florida, U.S.A. |
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Eric Gisin
Guest
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| Posted: Thu May 24, 2007 3:00 am Post subject: Re: Adaptec 2940UW |
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More bullshit. DOS 6 has a 8GB limit, DOS 7 does not.
The 128GB limit is strictly IDE. NT4 and Win 2K/XP without SPx have it.
The SCSI limit has always been 2TB in NT 4/5. This was "fixed" in Win 2003.
"Mike Walsh" <spamscks@netrox.net> wrote in message news:4654A8D9.11CCDBA@netrox.net...
| Quote: |
Win98, WinNT and Win2k have a 128 GB limit. Older OSs have a 8 GB limit.
Eric Gisin wrote:
Nonsense. The PC BIOS has no effect on SCSI. Every OS supports 2TB.
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Folkert Rienstra
Guest
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| Posted: Thu May 24, 2007 3:30 am Post subject: Re: Adaptec 2940UW |
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"Eric Gisin" <gisin@uniserve.com> wrote in message news:1179883559.697704@netadmin1.interbaun.net
| Quote: | "Folkert Rienstra" <see_reply-to@myweb.nl> wrote in message
news:46536f63$0$97234$892e7fe2@authen.yellow.readfreenews.net...
"Eric Gisin" <gisin@uniserve.com> wrote in message news:1179853835.584524@netadmin1.interbaun.net
"Robert Heller" <heller@deepsoft.com> wrote in message
news:47b77$46531e67$404a99a1$25863@news.news-service.com...
A 2940UW can handle as large a drive as the SCSI protocol can handle.
|
Actually, that is the question.
| Quote: | That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
Correct, but external RAID can be bigger than 2TB.
So how does SCSI handle that?
Why do you ask?
|
Nevermind. Found it.
Now the question is: did Adaptec skimp on a lousy 4 bytes of memory
available for Command Descriptor Blocks in it's SCSI processors,
*If* that is an issue at all, that is.
Isn't that just what Command Descriptor Blocks were designed for,
to make the hardware futureproof? |
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Folkert Rienstra
Guest
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| Posted: Thu May 24, 2007 3:32 am Post subject: Re: Adaptec 2940UW |
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"Mike Walsh" <spamscks@netrox.net> wrote in message news:4654A8D9.11CCDBA@netrox.net
| Quote: | Win98, WinNT and Win2k have a 128 GB limit.
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Nope.
The MBR has 32 bits for the start address and 32 bits for the extend.
That makes 2 TiB *plus* the highest partition size that a system allows,
which I believe to be also 2 TiB. Makes 4 TiB total.
| Quote: | Older OSs have a 8 GB limit.
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Filesystem (partition type) dependent.
| Quote: |
Eric Gisin wrote:
Nonsense. The PC BIOS has no effect on SCSI.
Every OS supports 2TB.
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Only 2 TiB or including 2 TiB? |
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Folkert Rienstra
Guest
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| Posted: Fri May 25, 2007 2:27 am Post subject: Re: Adaptec 2940UW |
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Failed to add:
"Folkert Rienstra" <see_reply-to@myweb.nl> wrote in message news:4654cef2$0$97269$892e7fe2@authen.yellow.readfreenews.net
| Quote: | "Eric Gisin" <gisin@uniserve.com> wrote in message news:1179883559.697704@netadmin1.interbaun.net
"Folkert Rienstra" see_reply-to@myweb.nl> wrote in message news:46536f63$0$97234$892e7fe2@authen.yellow.readfreenews.net...
"Eric Gisin" <gisin@uniserve.com> wrote in message news:1179853835.584524@netadmin1.interbaun.net
"Robert Heller" heller@deepsoft.com> wrote in message news:47b77$46531e67$404a99a1$25863@news.news-service.com...
A 2940UW can handle as large a drive as the SCSI protocol can handle.
Actually, that is the question:
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*Which* 'SCSI protocol' (version). How much of SCSI-3 went into the AIC-7880 chip.
Or in the 78xx chip series driver (and BIOS) if that would be the place to do it.
| Quote: |
That is, you cannot get a *SCSI* hard drive that is too big for a 2940UW
to handle.
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Currently, which is an entirely different matter.
| Quote: |
Correct, but external RAID can be bigger than 2TB.
So how does SCSI handle that?
Why do you ask?
Nevermind. Found it.
Now the question is: did Adaptec skimp on a lousy 4 bytes of memory
available for Command Descriptor Blocks in it's SCSI processors.
*If* that is an issue at all, that is.
Isn't that just what Command Descriptor Blocks were designed for,
to make the hardware futureproof? |
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