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тАО04-18-2007 08:55 AM
тАО04-18-2007 08:55 AM
Thank you in advance.
Jorge
Solved! Go to Solution.
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тАО04-18-2007 09:37 AM
тАО04-18-2007 09:37 AM
Re: Mirrorset running at reduced mode
SET mirrorsetname REPLACE=diskname
where diskname is the spare disk you want to add.
Purely Personal Opinion
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тАО04-18-2007 09:39 AM
тАО04-18-2007 09:39 AM
Re: Mirrorset running at reduced mode
http://webserver-1.wescorp.com/wescorp-library/pdf-library/DEC-CPQ-HP/MANUALS-7/EK-CLI70-RM-B01.pdf
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тАО04-18-2007 11:20 AM
тАО04-18-2007 11:20 AM
SolutionThe mirrorset needs to have a replacement policy set. Assuming that's done this is an example:
SHOW FAIL ! show the fail set
DEL FAIL DISK20400 ! remove the failed disk
ADD SPARE DISK20400 ! designate a hot spare
As a rule, I prefer to have disks always in the spare set. The controller(s) will grab a replacement disk in the event of a problem.
Andy
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тАО04-22-2007 08:31 PM
тАО04-22-2007 08:31 PM
Re: Mirrorset running at reduced mode
First you have to delete de failset and than you can add the replaced disk (can be in the same slot) to the mirrorset again.
@Andy,
As a rule I never put disks in a spare set.
This because I use only JBODs and love to use OpenVMS HBVS. There is only one limitation to HBVS. This is there may only be max. 3 drives in one shadowset. I have a disaster tolerant system, two locations and want to have on both locations 2 drives in one shadowset. Problem! I solved this by two JBODs on the location where the tapeunit is (because of the backup and reducing shadowset) and a mirrorset on the other location. This mirrorset I monitor every hour using 'SET HOST/SCSI' (actualy I monitor all the four HSZ controller every hour using this tool) and if there is something wrong I mail it to the operators/managers. By not using sparesets I did label all the disks in the cabinet and I always know where to find my disks. If there is a defective drive I can find the disk directly (I don't need a tool or show commands to find it).
AvR
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тАО04-22-2007 08:46 PM
тАО04-22-2007 08:46 PM
Re: Mirrorset running at reduced mode
You never know which site will get lost and Anton will lose data when there is 1 disk failure of the JBODs that is left.
When performance is not important we use a raid-5 that is shadowed to another raid-5 (to reduce # disks).
Wim