RE: Dilemma: Replace Escalade with Adaptec 2400A or Promise Super

[Ryan C. Bonham]

All the Adaptec I2O RAID products use the same driver, including the
ATA(Adaptec 2400A) based one.  The ATA drives/arrays will appear to the OS
as a scsi
device.  The driver was in the last Linus release also (2.4.10). I am
running the adaptec 2400A on a 2.4.6 kernel which i patch with adaptecs
dirvers, with no problems..

Ryan

> -----Original Message-----
> From: [e-mail] [mailto:[e-mail]]
> Sent: Wednesday, October 10, 2001 10:08 AM
> To: [e-mail]
> Subject: Dilemma: Replace Escalade with Adaptec 2400A or Promise
> Supertrak66?
> 
> 
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> 
> Hi folks,
> 
> I'm sorry to involve you lot but I have a dilemma of how to 
> replace a problematic 3Ware Escalade 6400 with another ATA 
> RAID controller due to the known problem of Escalade "losing" 
> one or several drives from my striped mirror (RAID10). It 
> needs a reboot and juggling the drives back and forth before 
> it rebuilds the set. Now that 3Ware seems to be discontinuing 
> the line, this issue probably won't be resolved any time soon 
> and I'm wondering which one of two remaining options, Adaptec 
> 2400A or Promise Supertrak66/100 is reasonably compatible 
> with recent (2.4.[89]) Alan Cox kernels? (compatible == 
> hopefully reliable)
> 
> I know that both are based on an I2O architecture so there's 
> some hope, at least, even if there is very little support 
> officially by Adaptec or Promise. Alan himself has proclaimed 
> that the Supertrak works for him just fine, but I presume 
> there are no Linux-based utilities available yet. Is there 
> then any way to find out if a drive has gone south and needs 
> to be replaced -- kernel log messages, maybe?
> 
> The Adaptec 2400A is presumably very much like the 2100S SCSI 
> model. Adaptec has released some binary only drivers and 
> utilities but none for the 2.4 kernel line. There are however 
> some beta stage drivers (dpt_i2o) available as source for the 
> SCSI models. Now, I happened to list the symbols of the 
> binary only driver for the 2400A (dpt_i2o.o) and came to the 
> conclusion that they are the very same as in the SCSI driver 
> source! Any differences ought to be small. Now, I'm wondering 
> whether anybody has already tested the driver with a 2400A? Alan?
> 
> Yours,
> 
>   // Jarkko Kniivila, CIO, Ambientia Ltd., Finland
> 
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