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Adaptec Ultra 160MB/sec SCSI support for Linux
hooligan writes
"This is an annoucement from Adaptec for support for their new
transfer speed for Linux. Check the press release."
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DPT does this, with Linux. And in my experience, DPT works a lot better than Adaptec, i.e., the speeds you pay for are the ones that you get.
It sounds like you need more than one channel and/or more/smaller spindles. 8 9GB drives will almost always be faster than 4 18GB drives given the same speed and cache. Also, are you using good cables? Good Teflon cables make all the difference.
it says that it provides support for linux and all that other junk, great... why does it suggest that you need redhat only? is it not a kernel feature? if not, then it isn't truely linux support... its that damn square is a rectangle but a rectangle isn't nessarily a square, redhat is a linux, but linux isn't nessarily just redhat... I think corporations need to recognize that old geometry rule applies to more than just shapes...
much of the reason for my dislike to redhat... they make so much money off linux yet they get all the credit for linux being what it is? linux was a lot with out them and always would be... this kinda stuff just irk's me!
PCI is 132 MB/s. 66 MHz PCI is double at 264. Don't forget 64 bit PCI exists also. That's fast enough band to support 160 SCSI.
I typed in my software from listings in the back of Analog. Every time I wanted to play a video game, I'd have to retype the whole damn thing.
The 2.2.5-22 RPM's have the drivers, at least, which is why RedHat 6.0 has them.
I wonder, does Linux support IEEE 1394?
If not, when?
Seeing hardware support prior to hardware release is nice. How long will other companies refuse to support open source drivers for their hardware once they see others doing this?
BeOS is still fucking stuck at 40 MB/s! WTF is up with that?! I'm going Ultra/66 from now on....
Wasn't Adaptec one of the companies that invested in Red Hat last year? Intel and AOL/Netscape own a chunk, and I think Adaptec does too.
I bet the acorn tape drive was *much* faster than commodore's datasette I had to use! (IIRC "standard" speed was less than 300bps). :-)
And reliability: MTBE 10 minutes
How are these drivers embedded into Redhat 6? Do they mean that the kernel that ships with RH6 supports this card? Or did RH use an unoffical patch to add support?
Well, it is availible to the OEM market, which means companies like Asus will be offering motherboards with this embedded. I bought an Asus P2B-S when the Ultra2 from Adaptec was fairly new, and it cost me about $300. The pci board from Adaptec cost well over $500 at the time. Unless you just really like your motherboard, buying a new one with this embedded would be cheaper.
Cool. This thing transfers more data per sec than my first hd could hold.
Does FreeBSD have Ultra/160 support as well?
The dolex site is useless, dude. At least 2600 has good stories about Emmanuel's dog.
I had posted info on an whole article devoted to Digital Audio/MIDI under Linux from the June 1999 issue of Electronic Musician 2 months ago. It never did get posted here though. *sigh* oh well, it might be coming off newsstands already, but you canprobably still pick up back issues at finer periodical distribution places.
steck
steck@orbital.icelab.net
Linux is listed, and so is Solaris. Does anyone know where to get the Solaris driver from? According to Sun's Hardware Compatibility List, it's not in the May release of Solaris.
Wasn't this demoed at LinuxExpo? ;>
AMI's MegaRaid controllers have good Linux support. Even got a GUI to config the thing.
Their latest U2W RAID card costs $1200 but
a UW one costs only $269 (max 128MB simms).
How about support for the AAA-130 RAID controllers? We've had one for ten months, but it only supports NT, Novell, DOS and SCO. It's currently running in non-RAID mode, appearing as three AIC-7883Us and is scheduled for replacement with a non-Adaptec RAID controller that works on a Linux system.
64 bits at 66MHz is still 528MBytes/sec. Or is that one transfer/2 clocks? Still, 264MBps.
Bill - aka taniwha
--
Leave others their otherness. -- Aratak
I also am quite interested in getting support for Adaptec RAID controllers. Until then I will stick to AMI controllers, which aren't bad.
Dell's PERC's used to be all AMI products, until the release of the PERC2 which is an Adaptec controller. That is why Dell's Linux boxes only come with the PERC2/SC (single channel) which is a low-end AMI U2/LVD RAID controller. This card is useless for anything other than a workgroup server.
I am a little confused about why adaptec is specifically mentioning redhat 6.0 as a base... shouldnt this be in the kernel? Also, since redhat has been out for a lot longer than this press release, how is it my copy of rh6 that i downloaded a month ago already has support? :P
64 bits at 66MHz is still 528MBytes/sec. Or is that one transfer/2 clocks? Still, 264MBps.
I was a bit off, but a dual channel U3W card theoretically gets 320 MBps. 64/66 PCI at 528MBps (400MBps in good implementation)/practice. It would give 64/33 a good run for the money, that is if you can afford to load it up with enough drives and use it effectively.
I checked the release for an ASIC - their dual channel U3W can ride a 66MHz 64 bit bus. This still pretty much maxes _that_ bus too.
I have talked to several of the techs at Adaptec and it would seem that they know about the Linux Communities intrest in their RAID cards. I, for one, would love to see a port of their RAID port driver, that little card ($150) is quite a deal when trying to sell a lower end server with RAID implemented at the hardware level.
awalker@ou.edu
Before someone does a clone and you cease to exist!
*wink*
These transfer rates are perfect for multitrack digital recording. AND the size of hard drives these days are big enough for entire multitrack projects to be done without constant CDR archiving. Instead you could do tape back-ups..
The stability of linux and the true multitasking would actually make it a better OS for these applications than MacOS 8.5. We have lost entire weeks of work due to OS failure followed by some disk failure.
Digi Design has an NT port but I still have no heard of ANY recording studio opting for that solution.
Ken
Bitcoin pyramid: Join here: http://www.bitcoinpyramid.com/r/1427 it's FREE!
Check out the benchmarks on Storagereview.com. Note the adapter will not be available to us till the fall.
tcboo
The mind boggles at how much faster it is compared to my first tape drive. Acorn Electron (souped up BBC-A or BBC-B, can't remember)..man that baby rocked.
--- "If a man speaks in a forest, and no woman hears him, is he still wrong?"
Actually, I've heard street prices for a dual-channel Ultra160 card will be around $525.
The average slashdotter is not the target market.
IT folks would be the target market
http://www.bullnet.com
Check out Infortrend.
www.infortrend.com
I used them in a previous life, nice controllers, and they abstract RAID 0,1,3,5,0+1 so that you don't have to sweat the kernel support thing. It's all done in hardware.
http://www.bullnet.com
whose computer gets 130mb/s throughput? UWSCSI is somewhat useless to the average slashdotter...
Seconded. I would sure like an Adaptec RAID controller on my server... I use only Adaptec SCSI controllers in my Linux machines, but my next server will have RAID -- of one kind or another.
Geeky modern art T-shirts
It's 26x my first HD.. and I'm definately not all that old!
:)
(gotta love hacker "back in the old days" competitions.
I assume that this beast sits on a 64 bit PCI bus? I seem to remember that 32 bit 33MHz PCI theoretically maxes out at 133MBps, and Intel chipsets seem to have a 80MBps upper limit.
I suppose that this is an argument for the newer Alpha systems as they have several independed PCI buses, each tested capable of 200MBps in 64 bit mode.
Doug Ledford works for Redhat and he is the maintainer of the aic7xxx. So, yes, they do mean Redhat, and yes, it is in the standard kernel.
--
http://www.wholepop.com/
Whole Pop Magazine Online - Pop Culture
http://www.wholepop.com/
Whole Pop Magazine Online - Pop Culture
And yes, it is in the kernel, not just Red Hat. This is not a conspiracy to coopt Linux, this is marketing droids giving out comfortable data points that they can understand. I wonder if it's in FreeBSD as well?
My question is when is Adaptec going to start supporting RAID for linux. I have yet to see a competent way of using Adaptec's RAID adapter for RH 6.0. Adaptec makes almost the best raid drives out there, but if I can't use them I can't buy them.
This is what Alan Cox wrote about it at- -
- -
http://linuxtoday.com/talkback/25240.html
-----------------------------------------------
Red Hat 6 ships with the source code to all the
included drivers in the kernel it ships with. The
code is afaik all in recent aic7xxx drivers from
any source.
Alan
-----------------------------------------------
In short:
1. It is not new.
2. It is not unique to RH.
And let me add, that even if its production will
start soon, don't expect prices lower than $1000.
Add to it the high prices of fast SCSI disks (it's
stupid to attach a slow disk to SCSI/160), and you
end up with prices of supercomputers.
Eli Marmor