DiskSuite V 4.2.1 on Solaris 8; write on write issue...

From: Padmanabhan Ramadurai (durai@head-cfa.cfa.harvard.edu)
Date: Wed Aug 20 2003 - 11:26:02 EDT

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Hi

We use disksuite to mirror the OS slices /, /var, /usr and swap
on two identical internal disks. So the only progrms which write
on these slices are Solaris and sofwate which update log files
in /var...

Should we be worried about the 'write-on-write' problem? Does
solaris do raw or direct I/O?

If we turn on the flag

        md_mirror:md_mirror_wow_flg=0x20

how much would be the performance hit?

any info/help/suggestions/pointers/real-life exp/ would be
greatly appreciated.

thanks
Durai

[will summarize, but only next week]
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