SAS SFF dualport vs. single port HDD

[Sakari Laulajainen]

Hei,

What is difference between dual and single port HDD? Wondering what to select on Proliant DL380 G5 QC 2P server. using sqlserver2005 database.

P.S. This thread has been moevd from Disk to ProLiant Servers (ML,DL,SL). - Hp forum Moderator

[Peter Mattei · Accepted solution]

If you install the SAS drive in a Proliant it does not matter if you installa a SP or DP drive since only one port will be used by the smart array controller.

Dual port (DP) drives are intended for redundantly connected configurations like with the MSA60 and 70 and if SAS drives are used in the backend of a storage array like the MSA2000.

for MSA70 info see http://www.compaq.com/products/quickspecs/12652_div/12652_div.html

Cheers
Pete

[b heimbigner]

note: Dual Port... "will only support HP-UX and OpenVMS environments and will be available on selected HP Integrity Servers only."

So for win/proliant users the dual port, as of today, provides no benefit.

[Sakari Laulajainen]

Thanks, single port will do.

[Peter Mattei]

Please do not forget to assign points to valuable answers.
This will alos help you to get timely answers in the future ;-)