I have a couple of 6509s that was acquired year 1999. According to the docs, mtbf of machine is 7 years. So it's due for replacement.
Now, i'm thinking why not upgrade the boxes instead of getting the same model replacement which i expect to be end-of-sale, end-of-life in a few years time?
So my question is, is getting a 6509-E as upgrade to my 6509s a good decision at this time?
Would appreciate to hear pros and cons from anybody.