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IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
book

IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning

by Cathy Warrick, Craig Gordon, Benoit Granier, Keitaro Imai, Rosemary McCutchen, Brannen Proctor, Jim Sedgwick, Paulus Usong, Mary Ann Vandermark, John Wickes
December 2005
Intermediate to advanced content levelIntermediate to advanced
530 pages
18h 34m
English
IBM Redbooks
Content preview from IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
78 IBM 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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ISBN: 0738494119Purchase book