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

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