I have been using the solution for five years. 

I have used PowerEdge VRTX for six years.

We have been using this solution for approximately two years.

I have been using this solution for six months.

I have been working with Dell PowerEdge VRTX for the past 8 years. 

I've been using the solution for five years. 

I have been using Dell PowerEdge VRTX for three years.

I have been using the solution for two years.

I've been using this solution for five years and have just implemented the recently released latest version. 

I have been using Dell PowerEdge VRTX for approximately six months.

I have been using this solution for three years. 

I have been using this solution for seven years. No problems except 1 disk died a few years ago.

Now it's ready to decommission, it's out of support now.

We've been working with the solution for more than two years. 

I have been working with Dell PowerEdge VRTX for five years.

I have been using this solution for the last three or four years.