Price/Performance of HANA, Exadata, Teradata, and Greenplum

Price/Performance of HANA, Exadata, Teradata, and Greenplum.

HANA has the lowest latency because it is in-memory. When there are two nodes a penalty is paid for crossing the network… this makes sense.

Exadata does well because the X3 product has SSD cache and I assumed an 80% hit ratio.

Teradata does a little worse because I assumed a lower hit ratio (they have less SSD per TB of data).

Greenplum does worse as they do all I/O against disks.

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