Artikelen gelabeld: fragmentation

The Quick and Dirty Dedupe Analyzer – Part 1 – Hands on


As announced in my last blogpost, qdda is a tool that analyzes potential storage savings by scanning data and giving a deduplication, compression and thin provisioning estimate. The results are an indication whether a modern All-Flash Array (AFA) like Dell EMC XtremIO would be worth considering. In this (lenghty) post I [...]

Oracle ASM vs ZFS on VNX


In my last post on ZFS I shared results of a lab test where ZFS was configured on Solaris x86 and using XtremIO storage. A strange combination maybe but this is what a specific customer asked for. Another customer requested a similar test with ZFS versus ASM but on Solaris/SPARC and [...]

Oracle ASM vs ZFS on XtremIO


Background In my previous post on ZFS I showed how ZFS causes fragmentation for Oracle database files. At the end I promised (sort of) to also come back on topic around how this affects database performance. In the meantime I have been busy with many other things, but ZFS issues still [...]

ZFS and Database fragmentation


Disk Fragmentation – O&O technologies.Hope they don’t mind the free advertising Yet another customer was asking me for advice on implementing the ZFS file system on EMC storage systems. Recently I did some hands-on testing with ZFS as Oracle database file store so that I could get an opinion on the [...]