Drive selection for gmirror

[Ireneusz Pluta]

Hello,

when selecting SATA drives for gmirror, boot device, connected to an on-board controller, should I 
look for so-called "enterprise grade", or "raid edition" drives (like for instance 
http://www.wdc.com/en/products/products.aspx?id=40), or I should rather focus on models closer to 
"consumer grade"? Will gmirror configuration significantly benefit from things like TLER, or it 
would rather be harmful, like when using these disks as single ones in desktop applications?

Thanks
Irek.