Minutes SAS-1.1 PHY WG teleconference March 3, 2005

Elliott, Robert (Server Storage) elliott at hp.com
Fri Mar 4 11:22:49 PST 2005


* From the T10 Reflector (t10 at t10.org), posted by:
* "Elliott, Robert (Server Storage)" <elliott at hp.com>
*
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I've posted 05-098r0 which proposes slightly increasing the external
(InfiniBand-based) cable length intra-pair skew allowance from 20 ps to
25 ps.  The higher the number, the more impact on the jitter budget.
=20
Cable manufacturers: please investigate what your cables provide today.
--=20
Rob Elliott, elliott at hp.com=20
Hewlett-Packard Industry Standard Server Storage Advanced Technology=20
https://ecardfile.com/id/RobElliott
<https://ecardfile.com/id/RobElliott> =20

=20


  _____ =20

From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of
Alvin.Cox at seagate.com
Sent: Friday, March 04, 2005 12:24 PM
To: t10 at t10.org
Subject: Minutes SAS-1.1 PHY WG teleconference March 3, 2005



The minutes are posted at:=20

  http://www.t10.org/ftp/t10/document.05/05-099r0.pdf

Items of critical concern for next week's meeting:=20

New item - Maximum intra-pair skew requirement for external cables.=20
Current specification is 20 pS. Is this number achievable? What can the
cables be supplied to? What can the receiver devices tolerate?=20

05-075r0  OOB Signal Transmitter Requirements [Wanamaker]=20
http://www.t10.org/ftp/t10/document.05/05-075r0.pdf=20

T10/05-079r1     SAS-1.1 Minimum XR/IR Receiver Signal Level for 3Gb
SATA Mode [Olawsky]=20
http://www.t10.org/ftp/t10/document.05/05-079r1.pdf=20

05-084r0     SAS 1-1 Compact Connectors (Internal and External) [Neer]=20
http://www.t10.org/ftp/t10/document.05/05-084r0.pdf=20
Proposal posted 2/23/05. It does not include electrical performance
requirements. Is this assumed to be the same as the existing tables?
SATA I/O adopted the Molex versions as the plan of record on 3/2.=20
Rob Elliott has posted an addition item concerning the use of OOB pins. =

http://www.t10.org/ftp/t10/document.05/05-100r0.pdf=20
Concerns over ability to resolve all issues before SAS 1.1 letter
ballot. Rob has details on timing and concerns list.=20

See minutes for additional items and details.=20

Alvin Cox
Seagate Technology, LLC
Tel 405-350-7424
Fax 405-324-3067
Cell 405-206-4809
E-Mail  alvin.cox at seagate.com


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 I've posted 05-098r0 which proposes slightly = increasing the=20 external (InfiniBand-based) cable length intra-pair skew allowance from = 20 ps to=20 25 ps.  The higher the number, the more impact on the jitter=20 budget.
  
 Cable manufacturers: please investigate what = your cables=20 provide today.
 -- 
Rob=20 Elliott, elliott at hp.com 
Hewlett-Packard Industry Standard Server Storage Advanced=20 Technology 
https://ecardfile.com/id/Ro= bElliott=20 

 

 From: owner-t10 at t10.org=20 [mailto:owner-t10 at t10.org] On Behalf Of=20 Alvin.Cox at seagate.com
Sent: Friday, March 04, 2005 = 12:24=20 PM
To: t10 at t10.org
Subject: Minutes SAS-1.1 PHY = WG=20 teleconference March 3, 2005


 

The minutes are = posted=20 at: 

 =20 = http://www.t10.org/ftp/t10/document.05/05-099r0.pdf

Items of critical concern for next = week's=20 meeting: 

New item = - Maximum=20 intra-pair skew requirement for external cables. 
Current specification is 20 pS. Is this = number=20 achievable? What can the cables be supplied to? What can the receiver = devices=20 tolerate? 

05-075r0 =  OOB=20 Signal Transmitter Requirements [Wanamaker] 
http://www.t10.org/ftp/t10/document.05/05-075r0.pdf 



T10/05-079r1     SAS-1.1 Minimum XR/IR Receiver = Signal Level=20 for 3Gb SATA Mode [Olawsky] 
http://www.t10.org/ftp/t10/document.05/05-079r1.pdf 



05-084r0     SAS 1-1 Compact Connectors (Internal = and=20 External) [Neer] 
http://www.t10.org/ftp/t10/document.05/05-084r0.pdf 
Proposal=20 posted 2/23/05. It does not include electrical performance = requirements. Is=20 this assumed to be the same as the existing tables? SATA I/O adopted = the Molex=20 versions as the plan of record on 3/2. 
Rob Elliott has posted an addition item concerning the use = of OOB=20 pins. 
http://www.t10.org/ftp/t10/document.05/05-100r0.pdf=20 
Concerns over ability to = resolve all=20 issues before SAS 1.1 letter ballot. Rob has details on timing and = concerns=20 list. 

See minutes = for=20 additional items and details. 

Alvin Cox
Seagate Technology, LLC
Tel = 405-350-7424
Fax=20 405-324-3067
Cell 405-206-4809
E-Mail=20  alvin.cox at seagate.com

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