Solved

IBM DS3400 Load Balancing

Posted on 2009-03-29
1
1,036 Views
Last Modified: 2013-12-16
I have got an IBM DS3400 storage manager with dual controller directly attached to a IBM X series 366 server via FC HBA. The DS3400 has two logical drives and for both of these logical drives the current owner is controller A. I want to implement load balancing so that 1 logical drive's current owner is controller A and the other logical drive current owner is Controller B. Does anyone have any idea/suggestion how to implement load balancing on DS3400?

Thanks
0
Comment
Question by:solution786
1 Comment
 

Accepted Solution

by:
VittorioVeresani earned 250 total points
ID: 24052273
hi,
when you create one LV, the storage assign it to ControllerA; the next to CtrlB, next CtrlA...

Assigns, in the sense that CtrlA or B are the preferred.
If LV2 is arrigned to CtrlB (Preferred), and CtrlB fails, you see LV2 managed by CtrlA.

A LVx may be Preferred by CtrlA but, for some motivation, managed by CtrlB.

First ensure that LV1 and LV2 are preferred respectively by CtrlA and B: if it is not so,
declare for LV2 CtrlB as preferred.

But I believe this is not your situation: for my opinion you have as preferred one LV on each Ctrl,
but in this moment, both LVx are managed by CtrlA. Why ?

You have not SAN switch (directly attached) then no switch problem.
Cables all OK ?
Wich OS is used ?
BIOS FC adapter OK ? Which type ? don't load HBA failover option.
MultiPath SW loaded ? done by OS or IBM software ?

Some storage (I don't remeber if 3400 is one of these) have not automatic failback:
Suppose you have 2 LV, 2Ctrl, 2 HBA, and they are balanced.
Detach a cable: LV2 will be served by CtrlA ; re-attach the cable;
If the storage has auto-failback, LV2 will return under CtrlB control.
If it has not, you have to do manually.

bye
vic
0

Featured Post

Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I will show you HOW TO: Perform a Physical to Virtual (P2V) Conversion the easy way from a computer backup (image).
A project that enables an administrator to perform actions within a user session context not just at the time of login but any time later on day(s) or week(s) later.
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

713 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question