supported SCSI host adapters in OS X

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catmistake's picture
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supported SCSI host adapters in OS X

Anyone know where there is a list of all the PCI SCSI Cards that are natively supported (drivers built in) by OS X?

Or better yet, any one know what is the best U/W SCSI card to get... that will just work without installing extra software on OS X?

Hawaii Cruiser's picture
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My Adaptec 29160 has had no p

My Adaptec 29160 has had no problems with X. Plug and play and booted the main harddrive without a hitch, but that's in my B&W. A lot of SCSI card problems can be machine-specific.

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thanks, but...

What did you pay for that?
I'd love to have one... but its for a B&W... can't justify the cost...

I guess I should have been more specific... I need a card that is only 80MB/s fast or so...
I have a card in there... it uses 50-pin, so I assumed it was scsi-2, but I am confused by [link=http://www.adaptec.com/worldwide/support/suppdetail.jsp?sess=no&language=English+US&prodkey=AHA-2930CU]this[/link]

that's the card I have... but isn't 20MB/s UltraWide? I thought scsi-2 was only 10MB/s... and that 50-pin was scsi-1 or 2... and that UltraWide used 68 pin!??

if it is UltraWide, I am satisfied... but what is with the 50-pin connecter?

Hawaii Cruiser's picture
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It just so happens I've been

It just so happens I've been trying to figure out which SCSI card to get for a PM 6500 to connect an HD50 SCSI Epson scanner to, and I was considering the 2930CU, but I've got an extra Atlas V harddrive, so I thought I'd opt for a UW card if possible. Well, the 29160N looked like the perfect choice, even though I really didn't need that much harddrive speed, and I found an eBay auction for one which wasn't very well listed and scored it for $10, believe it or not. And what's even more unbelievable was, when it arrived, it turned out to be a regular 29160, brand new with unused cables. Well, that was like putting a nuclear reactor in my 6500, so I put it in my B&W instead to replace the ATTO UL2D SCSI card which has worked fine, but only does 80mbs. I've had no problems with the ATTO, it was OEM in a lot of B&W's and it's not given me any problems in X, although there is no X ATTO utility for the card. It has one internal 68 pin connector, does not have the 50pin narrow connector, but it does have two channels, the external 68VHDCI connector being the second channel. But yes, I don't think you can get a 50pin narrow SCSI harddrive doing more than 10mbs, but don't quote me. Anyway, for the 6500, I snagged another eBay auction which was listed as a 2940UW but pictured a Mac Adaptec 2940U2W, and the photo wasn't a stock photo, so I won that auction for $8, and when the card arrived, he sent an IBM Adaptec 2940UW which didn't work in my Mac, so I complained that it wasn't the card in the photo and the guy refunded my money. Then I found a Mac firmware update for 2940UW on the web, and ran it on the card and it worked! Now the 6500 has the 2940UW. It does 40mbs. So I've had a recent strange series of "luck" with SCSI. Of course, now I'm in an ethical dilemma about whether or not I should pay the guy back for the card.
The problem I was trying to figure out with the 2930CU is whether or not you can have internal and external devices running simultaneously off the card, and I suspect you can, but they'd probably all be running at the slowest speed of any device connected. The 2930CU was probably bundled with external devices so there wasn't much concern about the internal connector and they probably just added the internal connector for PC users because PC's usually didn't have native SCSI, but the external 50HD is supposed to do 20mbs max.
Formac and Orange Micro make good cards too, supposedly, but I don't know they're compatibility with X. I had a Jackhammer which was a great card but it's not X compatible. If you want to buy my ATTO card, I'd part with it for $20.

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tell you what...

trash that 6500 completely, pay for the shipping of a stripped 9600 (no ram, no drives), and just give me the card and its a deal...

You have to shave off some of that karma some way... wow... $10... that's arguably a $300 card!

Truthfully, I had an Express U/W ATTO card that I could never get to work... all kinds of dls from their site... flash this in OS9... blah blah that... man, that's annoying... last thing that happened before I just literally threw it out was it fried a 9gb low profile drive... I actually saw smoke come out if it... that's when ATTO support stopped trying to help me... and it was a Seagate (luckily, I guess)!! But if your card is supported and works when plugged in, I'm game... this 9600 is just sitting here... good shape... and I can't stand the thought of someone actually using a machine that doesn't make sense... if it was a IIci, I'd let it go, if it was even a IIsi, I'd let it go... those are classics (well, the IIci is) but a 6500? with a scsi card? what are you thinking? Those things caused so many headaches for me when I was working with them... I'd be happy to see them all burn...

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Actually, I could use another

Actually, I could use another PM 9600 case to put my PowerExpress motherboard in and continue my adventures with it, but shipping to Hawaii is prohibitive. Yeah, in all honesty, the 6500 is a pain, and I'm resurrecting it for the only reason anyone should still keep one running: besides using it for scanning, it's going to be my young daughter's computer. The subwoofer is great for her Reader Rabbit, etc., and I can turn it down or turn it off using the remote control during those "are you listening?" moments. The big scanner fits on the same shelf nicely in the playroom, so that's it's two uses.
I've read that there were two almost identical ATTO UL2D's, and one was B&W OEM, and the other was problematic, so I guess you picked up one of the latter. The ATTO ExpressTools 2.8.2 is a great utility for OS 9. I've rescued a few SCSI drives with it.
Weigh that 9600 and see if you can come up with a cheap shipping to 96822 and I may take you up on it. The powersupply works, right? Do you still have the front bezels?

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I'll let you know what it is

Yeah, powersupply is good, got all the bezels and shelves and whatnot... its in good shape... I'd keep it, but in OS X the PCI bus is REALLY unstable, my nic crashes it anytime I transfer a file larger than about 50MB, so I'm using an 8600 as my server right now... just having the video off the PCI bus and on the mobo makes a big difference... but still the nic crashes the server with the transfer of large files (just not as often)... which is why I want to get the scsi up and running on the B&W... for the faster built-in ethernet.

Right now, I'm kind of screwed for time... finishing up 2 summer courses before I can graduate... so it may be a week or so (I think my finals end next sunday) before I get back to you, but I will let you know about the shipping. If you don't need the 9600 mobo, but just the case, let me know...

Jon
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Re: thanks, but...

[...]
I have a card in there... it uses 50-pin, so I assumed it was scsi-2, but I am confused by [link=http://www.adaptec.com/worldwide/support/suppdetail.jsp?sess=no&language=English+US&prodkey=AHA-2930CU]this[/link]

that's the card I have... but isn't 20MB/s UltraWide? I thought scsi-2 was only 10MB/s... and that 50-pin was scsi-1 or 2... and that UltraWide used 68 pin!??

if it is UltraWide, I am satisfied... but what is with the 50-pin connecter?

This Adaptec Support page shows the SCSI type differences. You can have an Ultra SCSI card run an 8bit (50 pin) bus. When it goes Wide it uses 16bit 68/80 pin busses. Basically, you can stick any Ultra drive on a 50 pin cable, and if the controller supports Ultra mode, you'll get 20MB/s. Otherwise, you might just get Fast (10MB/s) or even regular SCSI-1 or SCSI-2 (5MB/s). SCSI 1 and 2 are basically the same interface, but with more commands for SCSI-2. The speed improvements are in the Fast/Wide/Ultra/3 designations.

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