Requirement of startup SAN

Hello community members!

It's my first article (question).

Very grateful for any help.

I intend to install about 10 ESXi hosts with the boot from SAN (EMC storage).

Honestly, I have never deployed before SAN boot.

Are there best practices for SAN boot? Should I ask one number of logic unit for all the ESXi host operating system? or should I ask 10 LUNS 10 ESXi hosts?

What will be the size of the LUN that is recommended for the host ESXi (1 or 10 OS) operating system

Should I ask a separate logical unit number for ESXi OS?

Thank you

Game is

Hi game ago,.

Using iSCSI or FC?

You can read the Documentation for vSphere on boot ESXi of FC SAN, iSCSI or FCoE:

Documentation Centre of vSphere 5.5 - boot ESXi SAN Fiber Channel

VSphere 5.5 - boot ESXi with FCoE Software Documentation Centre

5.5 vSphere Documentation Centre - using ESXi with iSCSI SAN

Make sure that your cards HBA/iSCSI and tables/storage support boot from SAN/iSCSI

Yes, you will have to ask that a LUN separated for your ESXi 10 hosts means LUN 10 (some provider requires LUN ID 0).

Don't forget to hide only the start host LUN, boot boot from SAN LUN must be masked exclusively to their host.

The host can obtain the wrong identity an incorrect LUN then you configure single initiator zoning in trunk of SAN.

The Emulex, QLogic BIOS can become insensitive, if several other initiators are in the same area and you try to select a LUN to start.

For the requirements of LUNS, you can prepare LUN ~ 6 GB for each such logic unit number as described in the Documentation Centre of vSphere 5.5 - Configuration hardware ESXi

Storage for a 5.5 ESXi Installation requirements

Installing ESXi 5.5 requires a boot device is a minimum of 1 GB in size.

When booting from a local disk or SAN/LUN iSCSI, a 5.2 GB drive is necessary to allow for the creation of the VMFS volume and a scratch 4 GB partition on the boot device.

Some associated KB as below:

VMware KB: Preliminary Configuration for Boot-from-SAN

VMware KB: Recommended disk or size LUN for VMware ESX 3.x / 4.x and ESXi 3.x / 4.x / 5.x installations

VMware KB: Identification boot ESXi/ESX LUN for startup of SAN configurations

How to configure ESXi start using iSCSI Software? VMware vSphere Blog - VMware Blogs

Post edited by: Bayu Wibowo

Tags: VMware

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