Veritas-bu

[Veritas-bu] NBU Data Buffer Sizes (continued)

2001-05-09 05:54:49
Subject: [Veritas-bu] NBU Data Buffer Sizes (continued)
From: MarelP AT AUSTRALIA.Stortek DOT com (Marelas, Peter)
Date: Wed, 9 May 2001 19:54:49 +1000
Well spotted.

I should point out my previous emails in relation to this issue did not
take into account Max. MPX per tape drive.

Regards
Peter Marelas

> -----Original Message-----
> From: Dave Pearson (EML) [SMTP:Dave.Pearson AT eml.ericsson DOT se]
> Sent: Wednesday, 9 May 2001 7:28 PM
> To:   'veritas-bu AT mailman.eng.auburn DOT edu'
> Subject:      [Veritas-bu] NBU Data Buffer Sizes (continued)
> 
> Please note my previous message referred to our Sun E450 master server
> running Solaris 2.6. Other operating
> systems will have their own restrictions on the use of shared memory.
>  
> Veritas tech note 183701 tells you how to calculate the amount of shared
> meory, i.e.
>  
> SIZE_DATA_BUFFERS * NUMBER_DATA_BUFFERS * No. of tape drives * Max. MPX
> per tape drive
>  
> Our system has the values 64k and 96 for the first two parameters, 4 tape
> drives and an MPX of 8. This gives a total
> of 196Mb of shared memory.
>  
>  
> 
> Dave Pearson 
> Ericsson Mobile Communications (UK) Ltd. 
> * +44-1256-864700 
> * dave.pearson AT eml.ericsson DOT se 
> 
>  
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