Re: [ILUG] reliable disk array :-)

From: Niall O Broin (nobroin at domain sced.esoc.esa.de)
Date: Mon 27 Sep 1999 - 13:57:42 IST


Kate said

>Kate. trying to kill time, while formatting a 130GB array of 4GB disks :)

I take it that would be 129+1 RAID-5 :-)

BTW have you done the maths on MTBF with that large a number of disks. A quick
calculation assuming a 5 year MTBF on the disks gives you about a 1.8% chance of
a disk failing on any given day or an MTBF for the array of 57 days - now that's
what I call reliable :-) In fact, it'd be an ideal box to put 'doze 98 on - then
you could coincide the disk replacement with the reinstallation of 'doze :-)

Kindest regards,

Niall O Broin

UNIX Network Administrator nobroin at domain esoc.esa.de
Ground Systems Engineering Department Ph./Fax +49 6151 90 3619/2179
European Space Operations Centre, Darmstadt, Germany



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