Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

How to boot gracefully from SAN after power failure

Posted on 2006-06-24
5
Medium Priority
?
428 Views
Last Modified: 2013-11-15
I have a server that boots from an EMC AX100 storage array.  Both are connected to a UPS.  After a power failure, both the EMC and the server boots at the same time, but the server cannot boot before the SAN has finished booting.  How do I configure the server to wait until the EMC is up to start booting?

Related to the above, when the batter runs down to below a threshold, I want the EMC and the server to both shut down gracefully.  The problem is, if I shut down the EMC first, the server will crash; if I shutdown the server first, I have no way of shutting down the EMC since the server is connected to the UPS and not the EMC.  How do people do this?

Thanks.
0
Comment
Question by:MutualHedge
  • 3
5 Comments
 
LVL 30

Assisted Solution

by:ded9
ded9 earned 200 total points
ID: 16975362
0
 
LVL 30

Accepted Solution

by:
Duncan Meyers earned 800 total points
ID: 16978410
>I want the EMC and the server to both shut down gracefully
The AX100 doesn't need to be shut down gracefully. It has been designed to recover from a crash.

>How do I configure the server to wait until the EMC is up to start booting?
Theres no easy way around this. You may have the option of a long memory test on your server. Other than that, there's ot a whole lot you can do without spending up on products like this one: http://www.apc.com/products/family/index.cfm?id=70 . Its a smart Power distribution unit for racks - but it may do what you need - it allows for staged power-up, although whether the delay will be sufficient, I don't know.


0
 
LVL 30

Expert Comment

by:Duncan Meyers
ID: 16978419
On further reading on this page: http://www.apc.com/resource/include/techspec_index.cfm?base_sku=AP7900&tab=features

"Power Delays
Allows users to configure the sequence in which power is turned on or off for each outlet. This helps avoid in-rushes at start-up, which can cause overloaded circuits and dropped loads. Sequencing also allows users to predetermine which piece of equipment is turned on first so other equipment dependant on that unit will function properly." (from www.apc.com)

This looks like it may be just the ticket.
0
 

Author Comment

by:MutualHedge
ID: 16980627
Thanks for the answers.  They give me lots of ideas.  I will look into the APC staged power up product.  It's good to know the EMC can handle a power failure.

0
 
LVL 30

Expert Comment

by:Duncan Meyers
ID: 16980842
Thanks! You've just tipped me over the 300,000 point mark - which makes me a "Wizard"

W00t! :-)
0

Featured Post

[Webinar] Database Backup and Recovery

Does your company store data on premises, off site, in the cloud, or a combination of these? If you answered “yes”, you need a data backup recovery plan that fits each and every platform. Watch now as as Percona teaches us how to build agile data backup recovery plan.

Question has a verified solution.

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

In this article we will learn how to backup a VMware farm using Nakivo Backup & Replication. In this tutorial we will install the software on a Windows 2012 R2 Server.
Windows Server 2003 introduced persistent Volume Shadow Copies and made 2003 a must-do upgrade.  Since then, it's been a must-implement feature for all servers doing any kind of file sharing.
This tutorial will walk an individual through locating and launching the BEUtility application to properly change the service account username and\or password in situation where it may be necessary or where the password has been inadvertently change…
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…
Suggested Courses

571 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