RE: Ocr and Voting disk - slow disk

From: D'Hooge Freek <>
Date: Fri, 11 Sep 2009 08:23:41 +0200
Message-ID: <>


The clusterware issue's 3 io operations (2 read + 1 write) per second per node to the voting disks (220970.1 - RAC Frequently Asked Questions --> How much I/O activity should the voting disk have?) So as long as you are capable of doing that ...

I can't directly find anything for the ocr disks, but I think these are only used during cluster operations (node failure, adding a db/instance, relocating services, ...)


Freek D'Hooge
Oracle Database Administrator
tel. +32 (0)3 451 23 82

From: [] On Behalf Of Paul Barrett [] Sent: 10 September 2009 18:01
Subject: Ocr and Voting disk - slow disk

From: Paul Barrett<> To:;
Subject: Ocr and Voting disk - slow disk Date: Sep 10, 8:32 AM

Is it advisable to put the ocr and voting disks on slow disks - 10,000 RPM fiber channel disks? What is the ramifications in doing this? Has anyone placed the ocr and voting disk on this speed disk and have you encounterd any node eviction problems with this configuration?

Sent on the go from my Peek
-- Received on Fri Sep 11 2009 - 01:23:41 CDT

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