From: Jérôme Fenal (jerome.fenal@cmg.com)
Date: Wed Oct 09 2002 - 12:22:58 EDT
Hello all,
first, sorry for the disclaimer, but I can't remove it.
It's been a long a time I haven't posted here, so again, please excuse my
[raw|crude] english.
My needs : I have dual busses D2's on servers, and need to make mirrors on
them, using SDS/SVM. Disks on busses will be exactly symetric from one bus
to the other, and containing only mirrors.
I plan on using soft partitions (actually, I already do) but have a "policy"
question :
should I :
- make huge mirrors (eg. make slices with all the disk space, then
metadevice, then mirrors between two metadevices), then slicing these huge
mirrors into soft partitions
my file-systems
|||
soft partitions
\|/
1 huge mirror
____________|___________
/ \
1 concat/stripe 1 concat/stripe
| |
1 huge_slice 1 huge_slice
or
- make as many soft partitions on the disks as mirrors (eg. sort of
"encapsulating" with metainit -p -e), then create as many mirrors (using
twice as many concats based on these soft parts) for my file-systems
my file-systems
|||
mirrors
___________+++__________
/// \\\
concat/stripes concat/stripes
||| |||
soft parts. soft parts.
\|/ \|/
huge_slice huge_slice (with metainit -pe)
Has anybody has hints on what could be better, regarding :
- availability (consequences if a disk fail on either situation)
- performance (many meta devices vs. a bit less meta devices)
- etc.
Thanks for your answers, I'll summarize.
Regards,
Jirtme
-- Jirtme Fenal - Consultant Unix/SAN/Logiciel Libre Groupe Expert & Managed Services - CMG France mailto:jerome.fenal@cmg.com +33 1 55 20 50 08 ********************************************************************** Cet email et tout fichier attache est confidentiel. Ils ne peuvent etre utilises que par la personne ou l'organisation a laquelle ils sont destines. Si vous avez recu ce message par erreur veuillez en avertir votre administrateur systeme. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. CMG France ********************************************************************** _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagers
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