Skutecne hardwarovy RAID

[Dan Ohnesorg]

Dne Tue, Feb 01, 2005 at 10:56:47PM +0100, Tibor Pittich napsal:
>  1. februára 2005 o 22:48, Jan Krnavek píše:
> 
> > Btw: ted me napada ,jak to chce sw raid poresit ,kdyz bootovaci disk
> > muze byt jen jeden a ten zrovna odejde??? muzu mit bezpecne 
> > (bootovatelne) cely system na sw raidu?
> 
> isteze.
> 
> lilo.conf(5)
> ....
> boot=<boot-device>
>        Sets  the  name  of the device (e.g. a hard disk partition) that
>        contains the boot sector. If this keyword is omitted,  the  boot
>        sector is read from (and possibly written to) the device that is
>        currently mounted as root.  A raid installation is initiated  by
>        specifying   a   RAID1   device   as   the  boot  device;  e.g.,
>        "boot=/dev/md0".  Note that LILO version 22.0 and later  operate
>        differently  from  earlier  versions  with respect to the actual
>        location of the boot records.

Ja pouzivam jeste raid-extra-boot=/dev/[sh]da,.....

a /dev/md0 je raid 1, ale ma vice nez dva disky, klidne vsechny co v masine
jsou, at se nad tim nemusi premyslet.

Jinak ftp.debian.cz bezi taky soft raid 5 a vykonove je to vyrazne rychlejsi
nez ten adaptec co je je tam HW, ten raid5 moc nezvladal, hlavne pri zapisu,
takze jsme zkusmo pole zrusili, udelali soft raid5 a okamzite bylo videt, ze
je to uplne o necem jinem. Jsou tam SCSI UW320 disky, radic na 64bit PCI.


zdravim
dan