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тАО08-26-2003 04:15 AM
тАО08-26-2003 04:15 AM
Re: Help with SC10 connection
ServiceGuard has almost no impact. It just takes some monitoring and heartbeat cycles of your server.
In a split Bus environment you isolate SCSI and therefore the IOs, so the servers cannot impact each other.
Anyway, in a "normal" environment you will hardly be able to notice a difference.
The more important thing is the number of disks in a volume group!
cheers
Peter
In a split Bus environment you isolate SCSI and therefore the IOs, so the servers cannot impact each other.
Anyway, in a "normal" environment you will hardly be able to notice a difference.
The more important thing is the number of disks in a volume group!
cheers
Peter
I love storage
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тАО08-26-2003 05:24 AM
тАО08-26-2003 05:24 AM
Re: Help with SC10 connection
Can you explain your last sentence?
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тАО08-26-2003 06:54 AM
тАО08-26-2003 06:54 AM
Re: Help with SC10 connection
Well, a single disk with 10k rpm can do 100 to 150 read-IO operations per second.
If you let's say have 20 disks, mirrored with Mirror-UX and build a volume group and spread your accesses over all disks you will have 10*100 to 150 = 1000 to 1500 read-IOs max. you can expect.
Doubling the number of disks will theoretically double the IOs you can achieve (also depends on connections, saturation of SCSI bus etc)
Peter
If you let's say have 20 disks, mirrored with Mirror-UX and build a volume group and spread your accesses over all disks you will have 10*100 to 150 = 1000 to 1500 read-IOs max. you can expect.
Doubling the number of disks will theoretically double the IOs you can achieve (also depends on connections, saturation of SCSI bus etc)
Peter
I love storage
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тАО08-26-2003 09:28 PM
тАО08-26-2003 09:28 PM
Re: Help with SC10 connection
Thank you for the help.
Arturas
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