Get blasted when informing how it works
First off, I was informing those who never seen or touch one. I was trying to explain that how it works compared to the other storage arrays I administer and it seems that their is a bias opinion out there against it. If you don't like it fine, but wouldn't those who haven't touch one like to know how it performs?
Second, the DS8300 will be faster on many applications but might not be on other applications against the XIV. The hospital I work at has lots of unstructured data and it quite honestly does perform quite well with this type of data. Also, the DS8300 is like other traditional storage arrays and the one at my shop has 480 disk in 60 RAID groups (either RAID 5 or 10). I myself like to wide stripe LUN's but not on 480 disk of course. So there is still a potential to have hot spots in this array. But we monitor for this and when issues arrive we start moving LUN's around to different disk. With the XIV, it doesn't have any hot spots since 1 MB extents are written to all of the disk and so far the application teams and database admins like the performance they are getting.
Now, I myself compare the XIV to more of a higher Tier 2 array than a Tier 1 and it is true the EVA6000 is a few years old and to be fair I'm sure the latest version would perform comparable to the XIV. However, the HDS AMS1000 we have is only 6 months older than the XIV so I suppose that is a closer comparison, even though the AMS2500 is now out (we had to purchase the AMS1000 last December and couldn't wait for the AMS2500 release). We will be purchasing a AMS2500 soon as well, so maybe I could post my findings later.
Also, I have noticed where the XIV doesn't peform well and for those who do large sequential reads, better to stick with a traditional array. But for lots of random reads and writes (databases, VMs, medical records) it does quite well for a high end Tier 2.