Re: Let’s talk about Oracle FS1 and EMC XtremIO!
This Wikibon article mentions some data services (QoS and T10PI)
Notably though is that article saying FS1 provides no Data Reduction (DRe), so no compression and no deduplication.
I was very surprised to read Wikibon's comment on HCC there too;
The FS1-2 (along with other only Oracle storage) supports the Oracle Hybrid Columnar Compression (HCC), which allows variable and high levels of compression. This is usually useful for data warehouse and analytic workloads, and very useful for these workloads. The uptake of HCC has been limited for Oracle because most online workloads are row based and HCC can have a negative performance impact.