Friends Don't Let Friends Run Oracle on ZFS

I frequently get asked why I recommend against running Oracle DBMS on ZFS, and instead recommend using ASM. The filesystem v's ASM (or filesystem v's raw device) is a decision that people have had to make with databases for dozens of years. Over that time, in general, filesystem performance has…

#Tags: zfs, solaris, alignment, performance testing, xtremio, oracle

ZFS and Intelligent Storage

It's been almost 10 years to the day since Sun Microsystems first released ZFS as a part of the Solaris 10 6/06 release. I worked for Sun at the time, and it was clear that ZFS was a revolution in file systems - but it was also very clear…

#Tags: solaris, zfs, xtremio

Partition Alignment - Solaris (SPARC)

For historic reasons, most modern disk drives and storage storage arrays claim to the host that they have a 512 byte block size which in fact they actually use something larger - normally 4k or 8k, but possibly even larger. If you send an IO to such a disk/array…

#Tags: solaris, xtremio, partition alignment, alignment