What is a host storage domain?

What is a host storage domain?
From a product standpoint, a host storage domain refers to storage systems that provide heterogeneous server, multi-host tenancy capabilities. Examples of these include Hitachi Data Systems' (HDS) feature on their Lightning 9900V and Thunder 9500V. Different vendors refer to their multi-server shared storage port capability by different names, with various functions supported. Using the HDS example, host storage domains enable multiple host servers running different operating systems to access unique LUNs via a common shared physical storage port on a 9900V or 9500V storage system. HDS host storage domains allow different servers to have access to their own unique LUNs, including accessing what each server thinks is a unique LUN number for example LUN 0 (also known as LUN re-mapping).

To the host server the LUN appears and behaves as though it were on a virtual storage subsystem or array instead...

of being on a shared port. Note that a best practice would still involve LUN or Volume masking from the storage device as well as applicable form of fabric-based zoning for security and isolation. The ability to have multiple servers access multiple LUNs via a shared physical port is not unique; in fact, most all storage subsystems today support some form of shared access beyond simply physically sharing a common storage port via a Fibre Channel switch.

This was first published in August 2004

Dig Deeper on SAN management



Find more PRO+ content and other member only offers, here.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.



Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:



  • Flash technologies remain hot in 2016, experts predict

    Experts predict solid-state technology will remain hot in 2016, leading to the demise of high-speed hard disk drives, as ...

  • Tintri VMstore T5000

    Like all of its VM-aware storage systems, Tintri’s first all-flash array -- the Tintri VMstore T5000 -- allows admins to bypass ...

  • SolidFire SF9605

    The high-capacity SolidFire SF9605 uses SolidFire’s Element OS 8 (Oxygen) to deliver new enterprise features such as synchronous ...