Dave McGuire wrote:
On 11/29/2012 12:53 PM, Cory Smelosky wrote:
Of course for SCSI, the real limit may be much higher. There are lots
of ways to get big storage on a PCI-based Alpha.
Were there any 66MHz/64-bit PCI alphas? Maybe a PCI-X alpha?
The DS10 (in particular) has 64-bit PCI. I don't recall if it did
66MHz or not.
-Dave
"I/O slots 3 64-bit PCI slots and 1 32-bit PCI slot", so it's probably 33Mhz.
On 29 Nov 2012, at 12:56, Dave McGuire <mcguire at neurotica.com> wrote:
On 11/29/2012 12:53 PM, Cory Smelosky wrote:
Of course for SCSI, the real limit may be much higher. There are lots
of ways to get big storage on a PCI-based Alpha.
Were there any 66MHz/64-bit PCI alphas? Maybe a PCI-X alpha?
The DS10 (in particular) has 64-bit PCI. I don't recall if it did
66MHz or not.
Oooh, many options then!
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On 11/29/2012 12:53 PM, Cory Smelosky wrote:
Of course for SCSI, the real limit may be much higher. There are lots
of ways to get big storage on a PCI-based Alpha.
Were there any 66MHz/64-bit PCI alphas? Maybe a PCI-X alpha?
The DS10 (in particular) has 64-bit PCI. I don't recall if it did
66MHz or not.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On 29 Nov 2012, at 12:50, Dave McGuire <mcguire at neurotica.com> wrote:
On 11/29/2012 12:37 PM, Oleg Safiullin wrote:
I've currently got 3 x 127 GB PATA drives on CHIMPY - what is the
largest drive this machine (DS10) will be capable of using?
"Compaq AlphaServer DS10 Systems, Technical Summary":
Page 7:
---
Disks supported are 20 and 40 GB IDE disks and 18.2 and 36.4
GB UltraSCSI disks. In addition, a 72.8 GB universal wide
Ultra3 SCSI disk is supported with the front access storage
cage.
Page 12
---
System storage 108 GB SCSI or 120 GB IDE with internal storage cage or
218 GB SCSI with front access storage cage
--
I'm using two IDE disks: 80Gb and 120Gb.
Uhh..."supported" and "will work" are often two very different things
in DECland. I wouldn't consider a documentation quote very
authoritative here at all.
That said, the DS10 is a fairly late-model Alpha, introduced in 1999.
I'd expect it to at least support 28-bit LBA, topping out at ~137GB,
but it may support 48-bit LBA (BIG). I don't recall ever having used a
drive larger than 120GB on a DS10.
Of course for SCSI, the real limit may be much higher. There are lots
of ways to get big storage on a PCI-based Alpha.
Were there any 66MHz/64-bit PCI alphas? Maybe a PCI-X alpha?
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On 11/29/2012 12:37 PM, Oleg Safiullin wrote:
I've currently got 3 x 127 GB PATA drives on CHIMPY - what is the
largest drive this machine (DS10) will be capable of using?
"Compaq AlphaServer DS10 Systems, Technical Summary":
Page 7:
---
Disks supported are 20 and 40 GB IDE disks and 18.2 and 36.4
GB UltraSCSI disks. In addition, a 72.8 GB universal wide
Ultra3 SCSI disk is supported with the front access storage
cage.
Page 12
---
System storage 108 GB SCSI or 120 GB IDE with internal storage cage or
218 GB SCSI with front access storage cage
--
I'm using two IDE disks: 80Gb and 120Gb.
Uhh..."supported" and "will work" are often two very different things
in DECland. I wouldn't consider a documentation quote very
authoritative here at all.
That said, the DS10 is a fairly late-model Alpha, introduced in 1999.
I'd expect it to at least support 28-bit LBA, topping out at ~137GB,
but it may support 48-bit LBA (BIG). I don't recall ever having used a
drive larger than 120GB on a DS10.
Of course for SCSI, the real limit may be much higher. There are lots
of ways to get big storage on a PCI-based Alpha.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Isn't there a 137 GB limit to older IDE controllers? I don't remember much
about the various IDE restrictions, but that number pops out in my head and
it's likely that the older DS10 might not have the necessary support for
larger drives.
The DS10 won't be able to use above 137GB (although will accept any drive
above that size). 300GB Scsi work fine as well.
Jerome
Marc Chametzky wrote:
So it's basically maxed out as far as IDE goes?
Isn't there a 137 GB limit to older IDE controllers? I don't remember much about the various IDE restrictions, but that number pops out in my head and it's likely that the older DS10 might not have the necessary support for larger drives.
--Marc
I'll try to test larger disks tomorrow...
So it's basically maxed out as far as IDE goes?
Isn't there a 137 GB limit to older IDE controllers? I don't remember much about the various IDE restrictions, but that number pops out in my head and it's likely that the older DS10 might not have the necessary support for larger drives.
--Marc
So it's basically maxed out as far as IDE goes?
Sampsa
On 29 Nov 2012, at 19:37, Oleg Safiullin <form at pdp-11.org.ru> wrote:
sampsa at mac.com wrote:
Gentlemen,
I've currently got 3 x 127 GB PATA drives on CHIMPY - what is the largest drive this machine (DS10) will be capable of using?
Sampsa
"Compaq AlphaServer DS10 Systems, Technical Summary":
Page 7:
---
Disks supported are 20 and 40 GB IDE disks and 18.2 and 36.4
GB UltraSCSI disks. In addition, a 72.8 GB universal wide
Ultra3 SCSI disk is supported with the front access storage
cage.
Page 12
---
System storage 108 GB SCSI or 120 GB IDE with internal storage cage or 218 GB SCSI with front access storage cage
--
I'm using two IDE disks: 80Gb and 120Gb.
sampsa at mac.com wrote:
Gentlemen,
I've currently got 3 x 127 GB PATA drives on CHIMPY - what is the largest drive this machine (DS10) will be capable of using?
Sampsa
"Compaq AlphaServer DS10 Systems, Technical Summary":
Page 7:
---
Disks supported are 20 and 40 GB IDE disks and 18.2 and 36.4
GB UltraSCSI disks. In addition, a 72.8 GB universal wide
Ultra3 SCSI disk is supported with the front access storage
cage.
Page 12
---
System storage 108 GB SCSI or 120 GB IDE with internal storage cage or 218 GB SCSI with front access storage cage
--
I'm using two IDE disks: 80Gb and 120Gb.
