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zkb
zkb
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Pinned topic Requirements with respect to the "Disk Performance" on ESX Server?

‏2013-02-19T10:38:08Z |
We need to replace our old server and therefore requires a new Redhat server for our environment with "Synergy 7.1.0.6.001" (with Informix) and "Change 5.2".

Until now, I had a "HP Blade Server G1" with 8 cores, 32 GB RAM and direct attached SAN disks in use.

Our data center would mean that we are migrating to virtual "Redhat 6.1" "ESX Server." But I fear strong performance losses in the I / O area, because the ESX Server Shared SAN disk in use. What I want to avoid in any case is that there are reports "Waiting for CPU (I / O)".

I think not without reason, IBM recommends the use of local "Raw devices" for the DB file chunks.
http://pic.dhe.ibm.com/infocenter/synhelp/v7m2r0/index.jsp?topic=%2Fcom.ibm.rational.synergy.install.unix.informix.doc%2Ftopics%2Fs_t_igu_create_infx_chnk_files.html

For Oracle databases, there is even an article from Red Hat.
https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Tuning_and_Optimizing_Red_Hat_Enterprise_Linux_for_Oracle_9i_and_10g_Databases/sect-Oracle_9i_and_10g_Tuning_Guide-Configuring_IO_for_Raw_Partitions-Using_Raw_Devices_for_Oracle_Databases.html

My question now is,
What should I ask for our data center requirements, with respect to the "Disk Performance"
Access time read / write
Throughput read / write.
And how can you measure or verify this.

thanks for the help