Davoud Teimouri

Virtualization & Datacenter

Category: ESXi

Guest Connected vs RAW Device Mapping (RDM)

iSCSI vs Fiber Channel

RAW Device Mapping (RDM) is one of oldest VMware vSphere features which introduced to resolving some limitation on virtualized environments such as virtual disks size limitation and deploying services top of fail-over clustering services.

You can use a raw device mapping (RDM) to store virtual machine data directly on a SAN LUN, instead of storing it in a virtual disk file. You can add an RDM disk to an existing virtual machine, or you can add the disk when you customize the virtual machine hardware during the virtual machine creation process.

1,861 total views, 3 views today

HPE Customized ESXi Image – September 2018

HPE Customized ESXi Image

What’s New in HPE Customized ESXi Images HPE has released the latest version of customized ESXi images with latest available patches and updated drivers at 27th September. The customized images are contains all needed drivers for certified devices and components. The below version of customized images has been released: vSphere 6.7 vSphere 6.5 U2 vSphere […]

9,648 total views, 12 views today

[Review]: VMware vSphere APIs for I/O Filtering (VAIO)

VMware vSphere APIs for I/O Filtering (VAIO)

This is not a new features on last vSphere version but I went to write a post about that. We had to deploy different replication scenarios for our customers and some customers needs Point-In-Time Recovery (PiT) and The PiT solutions using VAIO actually so learning about the API is necessary for administrators.

The vSphere APIs for I/O Filtering (VAIO) were introduced in vSphere 6.0 Update 1. The VAIO framework and program were developed to provide VMware and partners the ability to insert filters for I/O into the data path of virtual machines. These “I/O Filters” enable VMware, and partners, to intercept and manipulate the I/O. This manipulation can provide open-ended data services, but thus far is limited to four use cases, two of which are currently exclusive to VMware and two which are open for partners. These use cases are: Replication, Caching, Quality of service (VMware only), Encryption (VMware only).

1,994 total views, 2 views today

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