The OCZ Vector 180 (240GB, 480GB & 960GB) SSD Reviewby Kristian Vättö on March 24, 2015 2:00 PM EST
AnandTech Storage Bench - Light
The Light trace is designed to be an accurate illustration of basic usage. It's basically a subset of the Heavy trace, but we've left out some workloads to reduce the writes and make it more read intensive in general.
|AnandTech Storage Bench - Light - Specs|
|Total IO Operations||832,339|
|Total GB Read||17.97 GB|
|Total GB Written||23.25 GB|
|Average Queue Depth||~4.6|
|Focus||Basic, light IO usage|
The Light trace still has more writes than reads, but a very light workload would be even more read-centric (think web browsing, document editing, etc). It has about 23GB of writes, which would account for roughly two or three days of average usage (i.e. 7-11GB per day).
|AnandTech Storage Bench - Light - IO Breakdown|
|% of Total||6.2%||27.6%||2.4%||8.0%||6.5%||4.8%||26.4%|
The IO distribution of the Light trace is very similar to the Heavy trace with slightly more IOs being 128KB. About 70% of the IOs are sequential, though, so that is a major difference compared to the Heavy trace.
|AnandTech Storage Bench - Light - QD Breakdown|
|% of Total||73.4%||16.8%||2.6%||2.3%||3.1%||1.5%||0.2%||0.2%|
Over 90% of the IOs have a queue depth of one or two, which further proves the importance of low queue depth performance.
The Barefoot 3's focus has always been sustained rather than peak performance and that's visible in our Light trace. It's not slow by any means since most drives are within a 10% margin (excluding the 850 Pro and Neutron XT), though.
The same applies to latency where most drives are essentially on par with each other.
While the 850 Pro does very well when it comes to performance, it's also the most power hungry, whereas the Vector 180 at smaller capacities is again easily the most power efficient drive.