Welcome to TOHDS

How to allocate disk to hosts

How to allocate disk to hosts

In computer storage, a logical unit number, or LUN, is a number used to identify a logical unit, which is a device addressed by the …

Allocate a LUN – carving

Allocate a LUN – carving

Hitachi designed the Device Manager so you can always carve a lun for whatever part of the resource tab you are into (and not only). …

Allocate a lun – masking/mapping

Allocate a lun – masking/mapping

Allocating a lun it’s the process where you present a carved lun to a host or to more hosts (if you have a cluster for …

How to check the LUN-ID from host side

How to check the LUN-ID from host side

If you ever wondered how you can check the lunid from the hostside and you don’t have the option of installing CCI then you are …

Expanding a LUN

Expanding a LUN

There are two ways to expand a lun. LUSE and Stripped expansion. For the stripped expansion follow this document here it is excellent. I found …

HiCommand LDAP authentication setup

HiCommand LDAP authentication setup

We discussed about HiCommand and that the default user account is system with the password of “manager”… However, that is not very secure so we …

HicommandCLI – configuration

HicommandCLI – configuration

As noted in the previous post regarding HiCommandCLI installation you need to specify the url, username and password every time you need to run a …

HicommandCLI – install and first run

HicommandCLI – install and first run

Device Manager has a command line as well. It can be downloaded and installed locally on any machine or it can be lunched from the …

How to virtualize volumes on USPV

After you login to storage navigator, change the mode to edit then use the Go menu and select Universal Volume Manager-> Volume Operation Select Add …

How to change ports settings on VSP

Changing ports settings is useful for setting up arrays, once they are setup you don’t need to touch them that often unless you decide that …

How to check port settings on USP

How to check port settings on USP

Changing ports settings is useful for setting up arrays, once they are setup you don’t need to touch them that often unless you decide that …

How to login to SVP

How to login to SVP

Storage Navigator or Element Manager is a webserver that allows you to perform day-to-day activities on a VSP. You will hear the terms Storage Navigator …

How to refresh a storage array into HCS

How to refresh a storage array into HCS

Remember that HCS is actually an application that holds it’s own database regarding hosts, what they see, what type they are and where they are …

How to virtualize volumes on VSP

How to virtualize volumes on VSP

After you login to svp, go under the External Storages and click on the Add external volumes button Click the Create External Path Group (this …

HUR – create a replication pair

HUR – create a replication pair

In this post we will be talking about creating a replication pair for the HUR (Hitachi Universal Replicator) Once HUR is configured and both arrays …

HUR step-by-step config

HUR step-by-step config

Hitachi Universal Replicator is Hitachi’s solution to async replication. Their implementation thought is a bit different then other solutions like EMC’s recoverpoints. Yes, they do …

Overview of insystem replication

Here is another great document (given a bit old from a how-to perspective) that HDS put together to explain the main differences between ShadowCopy and …

Registering a new host

Registering a new host

Hitachi Device Manager needs to know about the clients (or look at them as consumers if you want to) when you allocate space. In order …

Setting up truecopy between two VSP arrays

This article is a how-to on setting up replication between 2 enterprise class arrays using TrueCopy. Remember that replication in HDS in unidirectional so setting …

TrueCopy states

TrueCopy states

Normaly in a truecopy replication state we see different codes telling us teh health of the pairs. Here are the most common ones. Don’t forget …

VSP Architecture Guide

Build in progress, for now read this http://www.hds.com/assets/pdf/hitachi-architecture-guide-virtual-storage-platform.pdf

What is Device Manager

What is Device Manager

Device Manager is the main centralized suite used to manage all the HDS components that you might have at a site. It can manage VSP’s, …

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