78IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
measurements show more than 200 MB/s per 2 Gbps FICON Express2 channel and an
aggregate of more than 380 MB/s for two channels.
I/O rates with 4 KB blocks are in the range of 35,000 I/Os per second or more with a single
DS6000 host port. A single FICON Express2 channel can actually perform up to about 9,000
read hit I/Os per second. Two FICON Express2 channels have the potential of over 13,000
I/Os per second with conservative numbers. These numbers will vary depending on the
server type used.
The ESS 750 has an aggregated bandwidth of about 500 MB/s for highly sequential reads
and about 350 MB/s for sequential writes. The DS6000 has achieved over 1000 MB/s with
64 KB data ...
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