Mix SAS single port disks with SAS dual port disks within same Array

[Merli Roberto]

We have an existing Array Raid5 build with HP SAS 300GB 15k single port disks on a HP MSA60 enclosure.
We need to add a spare disk, but are not able to buy a single port one, because they are discontinued.
HP Support and Array Configuration Manager don't recommend to add a "dual port" disk to a "single port" disk Array. Do we have to change all disks? or can we mix up same capacity and speed disks (single port and dual port)?

[Taohung]

Don't care.
You can mix single and dual port SAS disks in the MSA60 enclosure.

What is different between single and dual port ?
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On HP ProLiant servers Dual Domain support is available for the HP Smart Array P800 attached to a MSA60 with the addition of the HP StorageWorks Dual Domain I/O Module Option (AG779A).

Dual Domain support with HP Smart Array P800 Controller for HP ProLiant and Integrity servers (requires dual port SAS drives)

[WilliamSmith11]

I have and array with four disk (sas dual port 15000 rpm)configured in raid5 , I have a failed disk .
Can I use a single port disk drive 10000rpm as replacement?

[WilliamSmith11]

Sorry I forget say that the machine is an Integrity server, running hpux

[appli1]

Similare kind of query:
I have rx2660 server with all the SAS disks (internal) were single port disk. One of the internal disk is failed & it is replaced with dual port SAS disk. Whether this mixed SAS single port disks with SAS dual port disks will lead to any issue ?