Yeah, I know... It's actually an IBM thing, not just a Scale thing. Some time
in the distant past, IBM decided that too few people were familiar with the
term "tebibyte" or its official abbreviation "TiB", so in the IBM licensing
catalog there is the "Terabyte" (really a tebibyte) and the "Decimal Terabyte"
(an actual terabyte). When we made the capacity license we had to decide which
one to use, and we decided to err on the side of giving people the larger
amount.
Carl Zetie
Offering Manager for Spectrum Scale, IBM
(540) 882 9353 ][ Research Triangle Park
ca...@us.ibm.com
Message: 3
Date: Fri, 13 Oct 2017 13:50:05 -0500
From: "Glen Corneau" <gcorn...@us.ibm.com>
To: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org>
Subject: Re: [gpfsug-discuss] User group Meeting at SC17 -
Registration and program details
Message-ID:
<of71960a6b.e35e5ed0-on862581b8.00666bdc-862581b8.00677...@notes.na.collabserv.com>
Content-Type: text/plain; charset="us-ascii"
The original announcement letter for Spectrum Scale Data Management
Edition (US version reference below)
re-defines a terabyte (nice eh?, should be a tebibyte). My math agrees
with yours, assuming your file system size is
actually 1PB versus 1PiB
Terabyte
Terabyte is a unit of measure by which the Program can be licensed. A
terabyte is
2 to the 40th power bytes. Licensee must obtain an entitlement for each
terabyte
available to the Program.
https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&appname=gpateam&supplier=897&letternum=ENUS216-158
------------------
Glen Corneau
Power Systems
Washington Systems Center
gcorn...@us.ibm.com
From: "Daniel Kidger" <daniel.kid...@uk.ibm.com>
To: gpfsug-discuss@spectrumscale.org
Date: 10/13/2017 11:32 AM
Subject: Re: [gpfsug-discuss] User group Meeting at SC17 -
Registration and program details
Sent by: gpfsug-discuss-boun...@spectrumscale.org
All,
For me the URL looks to have got mangled.
Should be:
https://urldefense.proofpoint.com/v2/url?u=http-3A__files.gpfsug.org_presentations_2017_Manchester_09-5Flicensing-2Dupdate.pdf&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=obB2s7QQTgU9QMn1708Vpg&m=6slj4_SM9ZLHQtguBkVK7Xg2UN1RlDFCjKJoGhWn2wU&s=NU2Hs398IPSytPh8bYplXjFChhaF9G21Pt4YoHvbrPY&e=
with the index page that points to it here:
https://urldefense.proofpoint.com/v2/url?u=http-3A__www.spectrumscale.org_presentations_&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=obB2s7QQTgU9QMn1708Vpg&m=6slj4_SM9ZLHQtguBkVK7Xg2UN1RlDFCjKJoGhWn2wU&s=CLN7JkpjQsfPdvOapYPGX3o7gHZj8AOh7tYSusTZJPE&e=
Also a personal note, I have found increasing confusion of decimal v.
binary units for storage capacity.
I understand that Spectrum Scale uses binary TiB, but say an 1TB drive is
in decimal so c. 10% difference.
So a 1 Petabyte filesystem needs only 909 TiB of Spectrum Scale licenses.
Any comments from others?
Daniel
Dr Daniel Kidger
IBM Technical Sales Specialist
Software Defined Solution Sales
+44-(0)7818 522 266
daniel.kid...@uk.ibm.com
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