Microsoft

Sizing SAN disks for performance

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As part of the technical team at my work, I often get the following request: “Build me a database system with xGB disk space”. Initially I wanted to rebel against such requests and provide the poorest performing disk I could (such as RAID5 on SATA). Instead I often would oversize the disk performance to make […]

SQL

SQL query to list all VMs and HW version

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I had a need to find all of my VMware VMs of a certain hardware version in order to compare to another list. Since I have production, test, and DR virtual machines, it was also important to know the path in the VMware hierarchy so I could easily identify the VM types. use VCenterdeclare @VMs […]

Avamar

Rerun failed Avamar VMDK backup jobs

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With our recent use of VMDK backups via Avamar, I have been annoyed at having to deal with at least 1 failure every night. Resolution would normally require logging into the Avamar console, finding the appropriate machine(s), and relaunching the backup. This assumes that it isn’t a production critical system and can launch a backup […]

Linux

Rescan SCSI bus on Linux

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I recently added a hard disk to a linux system in my VMware environment and was waiting to reboot to allow the OS to see the new disk. I then realized that the disks are added as SCSI devices, which should enable hot-swap capabilities. A little googling and I found the commandecho “- – -” […]

Linux

Passed my RHCSA exam! But not the RHCE

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I am proud to announce I just received the results for my RHCSA and I passed with a score of 300. It’s my understanding that is 100%! unfortunately I only got a 91 for my RHCE. Before anyone asks, I won’t say what’s on the test. I worked hard to take them, and I personally […]