Hello,
Does anybody know if there is a maximum end-to-end/point-to-point distance for *SAS copper* cables in a stack?
The Universal SAS Cabling Guide provides the following maximum distances for SAS optical but makes no mention of a maximum distance for SAS copper.
*If you are using SAS optical multimode breakout cables, the following parameters apply:*
*• The point-to-point (QSFP-to-QSFP) path of any multimode cable cannot exceed 150 meters* *for OM4 and 100 meters for OM3.*
*• The total end-to-end path (sum of point-to-point paths from the controller to the last shelf)* *cannot exceed 510 meters.*
Just wondering if there is also a maximum for SAS copper.
Thanks, Phil
10 - 20 m copper 30 - 50 m optical It depends on the controller and the OnTap version. You can have a look in Netapp Hardware Universe.
Isaac
On 01/12/14 17:49, Philbert Rupkins wrote:
Hello,
Does anybody know if there is a maximum end-to-end/point-to-point distance for *SAS copper* cables in a stack?
The Universal SAS Cabling Guide provides the following maximum distances for SAS optical but makes no mention of a maximum distance for SAS copper.
/If you are using SAS optical multimode breakout cables, the following parameters apply:/ / / /• The point-to-point (QSFP-to-QSFP) path of any multimode cable cannot exceed 150 meters/ /for OM4 and 100 meters for OM3./ / / /• The total end-to-end path (sum of point-to-point paths from the controller to the last shelf)/ /cannot exceed 510 meters./
Just wondering if there is also a maximum for SAS copper.
Thanks, Phil
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
It is a FAS3240 running ONTAP 8.1.3 - 7-Mode. All DS4243 shelves in the stack.
Are those end-to-end maximums (controller to last shelf in stack) you're listing or point-to-point (controller-to-first-shelf and/or shelf-to-shelf)? We're in trouble if 10m is the end-to-end maximum.
I checked HWU and didnt find anything information regarding end-to-end maximums.
On Mon, Dec 1, 2014 at 10:57 AM, isaac.gonzalez isaac.gonzalez@claranet.es wrote:
10 - 20 m copper 30 - 50 m optical It depends on the controller and the OnTap version. You can have a look in Netapp Hardware Universe.
Isaac
On 01/12/14 17:49, Philbert Rupkins wrote:
Hello,
Does anybody know if there is a maximum end-to-end/point-to-point distance for *SAS copper* cables in a stack?
The Universal SAS Cabling Guide provides the following maximum distances for SAS optical but makes no mention of a maximum distance for SAS copper.
*If you are using SAS optical multimode breakout cables, the following parameters apply:*
*• The point-to-point (QSFP-to-QSFP) path of any multimode cable cannot exceed 150 meters* *for OM4 and 100 meters for OM3.*
*• The total end-to-end path (sum of point-to-point paths from the controller to the last shelf)* *cannot exceed 510 meters.*
Just wondering if there is also a maximum for SAS copper.
Thanks, Phil
Toasters mailing listToasters@teaparty.nethttp://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
I think the longest SAS cable is 30m, i've seen that on HWU when I investigated this topic.
Vladimir
On Mon, Dec 1, 2014 at 6:56 PM, Philbert Rupkins philbertrupkins@gmail.com wrote:
It is a FAS3240 running ONTAP 8.1.3 - 7-Mode. All DS4243 shelves in the stack.
Are those end-to-end maximums (controller to last shelf in stack) you're listing or point-to-point (controller-to-first-shelf and/or shelf-to-shelf)? We're in trouble if 10m is the end-to-end maximum.
I checked HWU and didnt find anything information regarding end-to-end maximums.
On Mon, Dec 1, 2014 at 10:57 AM, isaac.gonzalez isaac.gonzalez@claranet.es wrote:
10 - 20 m copper 30 - 50 m optical It depends on the controller and the OnTap version. You can have a look in Netapp Hardware Universe.
Isaac
On 01/12/14 17:49, Philbert Rupkins wrote:
Hello,
Does anybody know if there is a maximum end-to-end/point-to-point distance for SAS copper cables in a stack?
The Universal SAS Cabling Guide provides the following maximum distances for SAS optical but makes no mention of a maximum distance for SAS copper.
If you are using SAS optical multimode breakout cables, the following parameters apply:
• The point-to-point (QSFP-to-QSFP) path of any multimode cable cannot exceed 150 meters for OM4 and 100 meters for OM3.
• The total end-to-end path (sum of point-to-point paths from the controller to the last shelf) cannot exceed 510 meters.
Just wondering if there is also a maximum for SAS copper.
Thanks, Phil
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
X66007A-R6 - Cable,SAS,Cntlr-Shelf/Shelf-Shelf,QSFP,50m (straight from HWU)
-----Original Message----- From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Momonth Sent: Tuesday, December 02, 2014 11:08 AM To: Philbert Rupkins Cc: toasters@teaparty.net Subject: Re: Maximum Total End-to-End Distance for SAS Copper?
I think the longest SAS cable is 30m, i've seen that on HWU when I investigated this topic.
Vladimir
On Mon, Dec 1, 2014 at 6:56 PM, Philbert Rupkins philbertrupkins@gmail.com wrote:
It is a FAS3240 running ONTAP 8.1.3 - 7-Mode. All DS4243 shelves in the stack.
Are those end-to-end maximums (controller to last shelf in stack) you're listing or point-to-point (controller-to-first-shelf and/or shelf-to-shelf)? We're in trouble if 10m is the end-to-end maximum.
I checked HWU and didnt find anything information regarding end-to-end maximums.
On Mon, Dec 1, 2014 at 10:57 AM, isaac.gonzalez isaac.gonzalez@claranet.es wrote:
10 - 20 m copper 30 - 50 m optical It depends on the controller and the OnTap version. You can have a look in Netapp Hardware Universe.
Isaac
On 01/12/14 17:49, Philbert Rupkins wrote:
Hello,
Does anybody know if there is a maximum end-to-end/point-to-point distance for SAS copper cables in a stack?
The Universal SAS Cabling Guide provides the following maximum distances for SAS optical but makes no mention of a maximum distance for SAS copper.
If you are using SAS optical multimode breakout cables, the following parameters apply:
• The point-to-point (QSFP-to-QSFP) path of any multimode cable cannot exceed 150 meters for OM4 and 100 meters for OM3.
• The total end-to-end path (sum of point-to-point paths from the controller to the last shelf) cannot exceed 510 meters.
Just wondering if there is also a maximum for SAS copper.
Thanks, Phil
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
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_______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Thanks everybody. I was wondering if there is a maximum end-to-end (controller to last shelf in stack) distance that applies to a stack built w/all copper cables. For example, a stack consisting of 6 shelves connected with 5 meter cables would have an end-to-end distance of 30 meters. I was curious because the Universal SAS Cabling Guide lists the maximum end-to-end distances for optical cables (not for copper).
We currently have a total of 12m of passive SAS copper between our controller and the last shelf in the stack. While I'm still not sure if there is an end-to-end maximum that applies to passive copper, I think we are in good shape given there are passive copper cable lengths of up to 5 meters.
On Tue, Dec 2, 2014 at 2:27 AM, Borzenkov, Andrei < andrei.borzenkov@ts.fujitsu.com> wrote:
X66007A-R6 - Cable,SAS,Cntlr-Shelf/Shelf-Shelf,QSFP,50m (straight from HWU)
-----Original Message----- From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Momonth Sent: Tuesday, December 02, 2014 11:08 AM To: Philbert Rupkins Cc: toasters@teaparty.net Subject: Re: Maximum Total End-to-End Distance for SAS Copper?
I think the longest SAS cable is 30m, i've seen that on HWU when I investigated this topic.
Vladimir
On Mon, Dec 1, 2014 at 6:56 PM, Philbert Rupkins < philbertrupkins@gmail.com> wrote:
It is a FAS3240 running ONTAP 8.1.3 - 7-Mode. All DS4243 shelves in the stack.
Are those end-to-end maximums (controller to last shelf in stack) you're listing or point-to-point (controller-to-first-shelf and/or
shelf-to-shelf)?
We're in trouble if 10m is the end-to-end maximum.
I checked HWU and didnt find anything information regarding end-to-end maximums.
On Mon, Dec 1, 2014 at 10:57 AM, isaac.gonzalez isaac.gonzalez@claranet.es wrote:
10 - 20 m copper 30 - 50 m optical It depends on the controller and the OnTap version. You can have a look in Netapp Hardware Universe.
Isaac
On 01/12/14 17:49, Philbert Rupkins wrote:
Hello,
Does anybody know if there is a maximum end-to-end/point-to-point distance for SAS copper cables in a stack?
The Universal SAS Cabling Guide provides the following maximum distances for SAS optical but makes no mention of a maximum distance
for SAS copper.
If you are using SAS optical multimode breakout cables, the following parameters apply:
• The point-to-point (QSFP-to-QSFP) path of any multimode cable cannot exceed 150 meters for OM4 and 100 meters for OM3.
• The total end-to-end path (sum of point-to-point paths from the controller to the last shelf) cannot exceed 510 meters.
Just wondering if there is also a maximum for SAS copper.
Thanks, Phil
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
-
Borzenkov, Andrei -
isaac.gonzalez -
Momonth -
Philbert Rupkins