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тАО12-12-2010 12:08 PM
тАО12-12-2010 12:08 PM
swap space size with big memory
My boss have bought a Blade server (BL870c i2) and I will install/configure it to virtualize 2 or 3 hosts (they will be oracle servers) on it.
The OS we will use is hp-ux 11.31 VSOE, this system have big memory (64gb), it will be a VM host. So, how swap space is sufficient?
On next month, we will get a big another system (rx8640), it also have 64gb memory, and it will be a data warehouse (Oracle). If as the recommends from manuals, the swap space should be twice memory (128gb), how i will configure it when my hdd is 146gb.
Please give me your recommends, when i'm a new babe with hp-ux, and i have just experience with small systems (for ibm aix, sun solaris, hic :( ).
Thanks in advanced!
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тАО12-12-2010 12:52 PM
тАО12-12-2010 12:52 PM
Re: swap space size with big memory
This is an outdated recommendation for such large memory machines. If you want performance, you don't want it to use swap and if you have enough RAM, there is no need for so much swap.
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тАО12-12-2010 06:20 PM
тАО12-12-2010 06:20 PM
Re: swap space size with big memory
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тАО12-12-2010 11:21 PM
тАО12-12-2010 11:21 PM
Re: swap space size with big memory
Do you have a common fomula for sizing the swap space? And how many GB exactly for my case (for both systems: VM host and data warehouse server)?
And the last question: how many gb for the /var volume (for the directory /var/adm/crash)
Before, when my system (both of application and database) on an old rx8620 is crashed, due to the /var volume is too small. So, local HP can't trace the root cause of that issue.
Thanks both very much!
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тАО12-12-2010 11:42 PM
тАО12-12-2010 11:42 PM
Re: swap space size with big memory
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тАО12-13-2010 07:55 AM
тАО12-13-2010 07:55 AM
Re: swap space size with big memory
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01914727/c01914727.pdf
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02465072/c02465072.pdf
Hari
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тАО12-17-2010 06:35 AM
тАО12-17-2010 06:35 AM
Re: swap space size with big memory
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тАО12-17-2010 10:49 AM
тАО12-17-2010 10:49 AM
Re: swap space size with big memory
@Ken:
What document which show as you said: The swap space will be equal or to twice the VMs simultaneously?