So here’s a quick comparison of XIV Gen3 and Gen2 with some competitors. Note that ESRP is designed to be more of a proof of concept than a benchmark, but it has a performance component which is relevant. Exchange 2010 has reduced disk I/O over Exchange 2007 which has allowed vendors to switch to using 7200 RPM drives for the testing.
The ESRP reports are actually quite confusing to read since they test a fail-over situation so require two disk systems, but some of the info in them relates to a single disk system. I have chosen to include both machines in everything for consistency. The XIV report may not be up on the website for a few days.
Once again XIV demonstrates its uniqueness in not being a just another drive-dominated architecture. Performance on XIV is about intelligent use of distributed grid caches:
- XIV Gen 3 returns 2.5 times the IOPS from a NL-SAS drive that a VNX5700 does.
- XIV Gen 3 returns 1.8 times from NL-SAS 7200RPM what a CX4 can get out of FC 10KRPM drives.
- Even XIV Gen2 with SATA drives can get 25% more IOPS per SATA drive than VMAX.
And to answer a question asked on my earlier post. No these XIV results do not include SSD drives, although the XIV is now SSD-ready and IBM has issued a statement of direction saying that up to 7.5TB of PCIe-SSD cache is planned for 1H 2012. Maybe that’s 15 x 500GB SSDs (one per grid node).
Filed under: XIV |