RHEL Cluster & RHEV

[Le Wen]

Hi Wahyu,

Under my Gigabit ethernet, it may take 10secs or 1/2mins to 
migrate(depends on the vm's memory),and the down time is very 
short---using "ping" to the vm may lose only one packet, however, to use 
migration, you don't need RHCS, what you need is shared storage.

Best regards,

Winner




Wahyu Darmawan <Wahyu.Darmawan at ag-it.com> 
Sent by: redhat-list-bounces at redhat.com
2009-11-10 11:13
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RE: RHEL Cluster & RHEV







Hi Wen,
Thankyou for replied. Can you share how many time did you need to use 
Redhat Xen live migration, is it failover?
Have you tested for RHEL Cluster failover condition, how many time RHEL 
Cluster can handles the failed node to switch another one?
I need this info to assess my application.
Thank you all for your cooperation.

Thx & Rgds,
Wahyu


-----Original Message-----
From: redhat-list-bounces at redhat.com 
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Le Wen
Sent: Tuesday, November 10, 2009 10:00 AM
To: General Red Hat Linux discussion list
Subject: RE: RHEL Cluster & RHEV

Well, till now, no virtulization vendor can provide truly 0% downtime
product, even vmware's FT&DRS or Citrix's Xenmotion or MS's Live
migration, there will be nearly 1 or more seconds the client will lose
connection to the virtual server. From the migration's theory(memory
copy), we can know there won't be 0% downtime.
I haven't tested RHEV, but I've tested Redhat Xen live migration, there's
also a short pause, so I don't think the RHEV can provide 0% downtime
neither.

Rgds,

Winner




Wahyu Darmawan <Wahyu.Darmawan at ag-it.com>
Sent by: redhat-list-bounces at redhat.com
2009-11-10 10:45
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RE: RHEL Cluster & RHEV







Hi,
Does anyone can help me?
Thankyou.

Rgds,



-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Wahyu Darmawan
Sent: Monday, November 09, 2009 3:27 PM
To: General Red Hat Linux discussion list
Subject: RHEL Cluster & RHEV

Hi all,

Need your info. Does RHEL Cluster can provide 0% of downtime, means I need
"zero downtime" cause my application needs to always available on any
condition, even 1 minutes off. Maybe you can give me some documentation?
And, could you please to tell me, how can I create RHEV to fail over
condition?
Thanks in advance for your help.

Rgds,
Wahyu

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