[gpfsug-discuss] Scale per TB (was: User group Meeting at SC17 - Registration and program details)

[Carl Zetie]

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
 carlz at us.ibm.com      
Message: 3
Date: Fri, 13 Oct 2017 13:50:05 -0500
From: "Glen Corneau" <gcorneau at us.ibm.com>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] User group Meeting at SC17 -
	Registration and program details
Message-ID:
	<OF71960A6B.E35E5ED0-ON862581B8.00666BDC-862581B8.00677693 at 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
gcorneau at us.ibm.com





From:   "Daniel Kidger" <daniel.kidger at uk.ibm.com>
To:     gpfsug-discuss at 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-bounces at 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.kidger at uk.ibm.com