RE: ASM Host Mirroring
- From: "Randy Johnson" <oraclelist@xxxxxxxxxxxxx>
- To: "'oracle-l'" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 27 Mar 2008 06:36:39 -0500
The actual Oracle terminology is:
Normal or High Redundancy - Mirroring Provided by ASM
External Redundancy - Redundancy external to ASM (disk/san/host
level)
If you are asking about failgroups then you are talking about Normal/High
Redundancy.
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From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Powell, Mark D
Sent: Tuesday, February 19, 2008 3:17 PM
To: oracle-l
Subject: RE: ASM Host Mirroring
I believe that when "host" based mirroring is in use in relation to ASM that
it means the host OS or hardware is performing the mirror function outside
of ASM so ASM is not mirroring the disk in this case.
-- Mark D Powell --
Phone (313) 592-5148
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From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of LS Cheng
Sent: Tuesday, February 19, 2008 2:33 PM
To: oracle-l
Subject: ASM Host Mirroring
Hi
Does anyone know how ASM does host based mirroring. For example we have two
storage arrays with 10 metres distance, two failure groups are created, one
per array. How does ASM mirror the extents? Network? Using the Cluster
Interconnect? Or a seperate Network?
Cheers
--
LSC
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