INCITS has recently revised their rules, which are published in Reference Document 2 (RD-2). This document is available on the INCITS web site at:

  http://www.incits.org/rd2/main.htm

One significant change is that the two-thirds rule has changed as follows:

4.4.2.2 2/3 Voting Rule

The 2/3 voting rule is defined as: The change is that abstentions are no longer subtracted from the second part of this rule.

I have updated the INCITS Vote Calculator on T10.org to reflect this change:

  http://www.t10.org/cgi-bin/incits_vote.pl

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John Lohmeyer                  Email: lohmeyer@t10.org
LSI Logic Corp.                Voice: +1-719-533-7560
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