The raw disk i/o performance of compaq storage works RAID arrays under tru64 unix

Uselton, A C

Lawrence Livermore National Laboratory

关键词: Computers;    Configuration;    Storage;    Performance;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;   

DOI  :  10.2172/15006441
RP-ID  :  UCRL-ID-141831
RP-ID  :  W-7405-ENG-48
RP-ID  :  15006441

美国|英语

来源: UNT Digital Library

【 摘 要 】

We report on the raw disk i/o performance of a set of Compaq StorageWorks RAID arrays connected to our cluster of Compaq ES40 computers via Fibre Channel. The best cumulative peak sustained data rate is l17MB/s per node for reads and 77MB/s per node for writes. This value occurs for a configuration in which a node has two Fibre Channel interfaces to a switch, which in turn has two connections to each of two Compaq StorageWorks RAID arrays. Each RAID array has two HSG80 RAID controllers controlling (together) two 5+p RAID chains. A 10% more space efficient arrangement using a single 1l+p RAID chain in place of the two 5+P chains is 25% slower for reads and 40% slower for writes.