Hakan schreef:

>Stephan,
>
>I don't know what Kris
>


> is talking about
>
I'm telling there are no fibre channel drivers for OS2/eCS

> but there are indeed fibre
>channel drivers for OS/2
>
No, there aren't! Quoting your very own source:

>The cards I 
>am currently using are ConnectCom CSBFC1000 which are based on LSI
Logic FC909 chipset. I could not 
>find a working OS/2 device driver for this adapter, but was able to use
it via BIOS functions, i.e. with the 
>INT13 driver shipped with OS/2.
>
So what Vadim is doing is some black magic with exotic scsi adapters 
even I never heard of.

Needless to say:

- I tried the INT13 trick with my Adaptecs, and it doesn't work at all. 
So the trick is limited to specific type of scsi adaptors.
- and anyway, in order to attach the 2 disks we are talking about, 
Stephan needs to purchase a fibre channel capable scsi adaptor. Of which 
he would know wether it works or not with the int13  trick only AFTER 
having spent his money.
- Meaning, by the time he  eventually would have activated the whole 
affair, he would have spent already over the double of money you pay at 
Ebay for a 73 Gig Seagate U320 68 pins disk (for instance).

- hence my advice to ditch the disks.

I'll take the liberty to quote Vadim's entire message, as it is an 
interesting article from the technical point of view:


Hello Kris,

This is correct - I've been using 1 Gbit fibre channel arrays with WSeB for
a few years now. The cards I 
am currently using are ConnectCom CSBFC1000 which are based on LSI Logic
FC909 chipset. I could not 
find a working OS/2 device driver for this adapter, but was able to use it
via BIOS functions, i.e. with the 
INT13 driver shipped with OS/2.

Although the performance is lower in this case compared to a DMA-capable
PCI adapter driver, it has not 
been a limiting factor in my application. With I13, I get about 28 MB/sec
throughput with a single drive 
(rather than theoretical max of 50-60 MB/s for the Ultrastar 9ZX drives I
am using, or 100 MB/s of a RAID 
controller). In my case, the limiting factor is bandwidth provisioning - I
have 5-6 devices per channel that 
share the 100 MB/s bandwidth. One other problem with I13 is the 8 GB limit
but I could live with it.

I've tried many other FCAL adapters under OS/2, and one other adapter type
I am using is QLogic 
QLA-2100. This adapter has an OS/2 driver, but I have never been able to
load that driver. That card also 
works reasonably well with I13 driver, but is quite old, and is not capable
of SAN logins. I have to use SAN 
bridging at the switch so that the card "sees" a private loop.

Other adapters that I've tried but am not using include QLogic 2200, Emulex
LP6000, LP7000, LP850, 
Compaq 161290-001. The Emulex adapters have a very poor BIOS performance
while QLA2200 is 
somewhat faster than QLA2100, and supports fabric logons. Compaq HBA has an
OS/2 driver but that 
driver will only load on a genuine Compaq server box.

There is a source code of the Linux driver for FC9x9 controllers available.
Me and a friend have been 
trying to port this driver to OS/2, but so far this work is in its early
stage. I've contacted Samantha 
Rawaneera at LSI Logic, the person who wrote an OS/2 PDD for the MPT Fusion
series of their SCSI and 
FCAL HBAs. On several platforms, the same MPT driver supports both SCSI and
FCAL (also supports 
TCP/IP over FCAL), but the OS/2 driver (available on hobbes) is limited to SCSI-only.

Please let me know if you have more specific questions.

Vadim



On Tue, 12 Jul 2005 05:31:50 +0200, Kris Steenhaut wrote:


>>Hello all,
>>
>>I was told someone here is using a scsi fibre channel HD on an OS2 system.
>>
>>I really would like to know exactly what scsi card it is and which 
>>drivers are being used.
>>
>>Thanks.
>>
>>-- 
>>Groeten uit Gent,
>>
>>   Kris
>

-- 
Groeten uit Gent,

   Kris



 
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