In article <[EMAIL PROTECTED]>,
Brian D. Haymore <[EMAIL PROTECTED]> wrote:
>On Thu, 11 Nov 1999, Matthew Clark wrote:
>> Which gives better performance on Linux???
>Mylex does from my tests. Mylex does very well in fact.
Also, very important, the mylex driver can be controlled through
the /proc filesystem. The MegaRaid comes with a utility that AFAICS
simply hooks into the BIOS to run the BIOS setup screen. And while
it somewhat works, it's dead slow when not run on the console and
you can 't script it or use it for automatic diagnostics.
Also, we've seen several hangs with the MegaRaid when one disk
is malfunctioning in a RAID5 array which is unforgivable since
that defeats the whole purpose of a RAID5 array.
[specifically we've seen that some SCSI disks crash in such a way
that they claim to have a 0GB size - they get taken offline nicely,
but after a reboot it takes ages to get through the BIOS and
the Linux driver hangs indefinitely]
Also I've seen the MegaRaid get stuck in an endless SCSI reset loop.
Increasing the Linux SCSI layer timeout (got included with 2.2.13)
seems to have fixed it but I still think it's strange
All in all we're much more happy with the Mylex controllers.
Mike.
--
First things first, but not necessarily in that order.
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