Berkeley CSUA MOTD:Entry 14920
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2025/05/24 [General] UID:1000 Activity:popular
5/24    

1998/11/6-8 [Computer/HW/Drives] UID:14920 Activity:moderate
11/5    anyone know of a good source of info on hardware raid...in other
        words i have 4 uw sca drives that id like to stick in an external
        cabinet so that they act like one big fast 68 pin drive level 0 is
        all that is desired...-mrehrer
        \_ Uh... I believe raid0 is a mirror.  You mean raid1?  A single
           contiguous non-striped block?  Why would you want to do this?
           You're 4 times as likely to lose all your data due to disk
           failure and you don't get _any_ performance benefits.  What are
           you trying to do?
           \_ RAID 0 is striping. Why would you do this in the hardware?
              Many OSes support this in the OS (e.g. NT and HP-UX). If
              you want hardware RAID then you'll have to buy some more
              hardware (controller at the least). --dim
              \_It would be reasonable to assume that what i asked for
                is actually what i wanted....the reason that i said i
                i wanted hw to do the striping is because the devices i
                have are sca 80 pin drives which i had originally intended
                to use with 80->68 pin adapters but have had very limited
                success with the adapters i have a sw striper but hw would
                be better....im not worried about losing data i realize
                the inherent instability in level 0....-mrehrer
                \_ Dude, don't fuck with dim.  He knows what you want to do
                    better than _you_ do.  He has the biggest penis on soda,
                     and he's ALWAYS RIGHT!!!!1!
        \_ Question rephrased:
           I have 4 80-pin drives that aren't working well on my Mac. I'd
           like to pop them in an enclosure with a 68-pin connector on it
           and connect *that* to my Mac. It is also desirable to stripe
           the disks if I can for performance reasons. What are my options?
           \_ you can put those 80 pin drives (likely they are sca or
              single connector a-a-a-a) in a 68 pin scsi chain with an
              adaptor available from places like central computer.
              these adaptors provide data, power, and pinouts for
              scsiid,term,spinonpower,blah blah.  they go for like
              20 bucks or so.  You can also try finding an box with
              an sca backplane which is cooler but I am not sure on cost.
              Striping can be done from a hardware card but striping can
              also be done from software (linux/solaris/*BSD/Irix/others
              have software that can stripe multiple disks into one logical
              unit)  last i looked, such software is still an add-on cost
              for macs.  Note that in a simple stripe, one disk will take
              out the entire set of disks in the stripe.  If this is jsut
              for scratch space say for editing stuff thats get saved
              to more reliable media later, this is fine.
2025/05/24 [General] UID:1000 Activity:popular
5/24    

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