Comments on: Bulletproof storage http://blog.50micron.com/2007/05/19/bulletproof-storage/ Ranting and raving about storage and technology Mon, 19 Dec 2011 15:36:52 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: SanGod http://blog.50micron.com/2007/05/19/bulletproof-storage/comment-page-1/#comment-4068 SanGod Wed, 04 Jul 2007 06:34:17 +0000 http://www.sangod.com/?p=140#comment-4068 Try this: symdev -sid <xxx> -lock list You may find there are device specific locks on the drives in question. This can result from a command hanging or being interupted in mid stream. Now my "official" response is to have you call EMC at 1-800-782-4362 (1-800-SVC-4EMC) and have them dial into the box and remove the lock, but if you are confident that you know when the locks were created, you can break them yourself. **DISCLAIMER** The author is not responsible if, in attempting this, you bollocks your system up. Breaking devices or configuration locks can be a very dangerous practice, and should be left to EMC and their liability insurance. (Wheras if I get sued all you'll get is debt) ;-) symdev -sid </xxx><xxx> -force release -lock ## (lock # will be identified in the "list" command) Again, I can't urge you enough to let EMC take care of this, because only they can tell what lock #'s are significant for different reasons, and can usually guarantee that you can break the lock without incident.</xxx> Try this:

symdev -sid -lock list

You may find there are device specific locks on the drives in question. This can result from a command hanging or being interupted in mid stream.

Now my “official” response is to have you call EMC at 1-800-782-4362 (1-800-SVC-4EMC) and have them dial into the box and remove the lock, but if you are confident that you know when the locks were created, you can break them yourself.

**DISCLAIMER** The author is not responsible if, in attempting this, you bollocks your system up. Breaking devices or configuration locks can be a very dangerous practice, and should be left to EMC and their liability insurance. (Wheras if I get sued all you’ll get is debt) ;-)

symdev -sid -force release -lock ## (lock # will be identified in the “list” command)

Again, I can’t urge you enough to let EMC take care of this, because only they can tell what lock #’s are significant for different reasons, and can usually guarantee that you can break the lock without incident.

]]> By: dipincoolwater http://blog.50micron.com/2007/05/19/bulletproof-storage/comment-page-1/#comment-4067 dipincoolwater Wed, 04 Jul 2007 06:17:24 +0000 http://www.sangod.com/?p=140#comment-4067 Hello, This is a query for Symmetrix SRDF pros... I am getting this error on est/split on symmetrix device group.. ====================================================== bash-2.05# symrdf -g crm-tibco-app_dg split -force -symforce Execute an RDF 'Split' operation for device group 'crm-tibco-app_dg' (y/[n]) ? y An RDF 'Split' operation execution is in progress for device group 'crm-tibco-app_dg'. Please wait... Unable to acquire the Symmetrix device lock ========================================= Though i have a fair knowledge what this error means i am not able to find the solution. I have my important data replication going on , so would request you guys to suggest a solution to this issue. Reg ~Dee Hello,

This is a query for Symmetrix SRDF pros…

I am getting this error on est/split on symmetrix device group..
======================================================
bash-2.05# symrdf -g crm-tibco-app_dg split -force -symforce

Execute an RDF ‘Split’ operation for device
group ‘crm-tibco-app_dg’ (y/[n]) ? y

An RDF ‘Split’ operation execution is
in progress for device group ‘crm-tibco-app_dg’. Please wait…

Unable to acquire the Symmetrix device lock
=========================================

Though i have a fair knowledge what this error means i am not able to find the solution. I have my important data replication going on , so would request you guys to suggest a solution to this issue.

Reg

~Dee

]]> By: SanGod http://blog.50micron.com/2007/05/19/bulletproof-storage/comment-page-1/#comment-3035 SanGod Sat, 26 May 2007 09:56:52 +0000 http://www.sangod.com/?p=140#comment-3035 It's funny, I did some work at Columbia University in New York, their datacenter is in a basement right next to the river. Their "water emergency system" consists of a cart with a bunch of rolls of 10mil plastic sheeting to cover the servers up with. It’s funny, I did some work at Columbia University in New York, their datacenter is in a basement right next to the river. Their “water emergency system” consists of a cart with a bunch of rolls of 10mil plastic sheeting to cover the servers up with.

]]> By: Nigel http://blog.50micron.com/2007/05/19/bulletproof-storage/comment-page-1/#comment-3022 Nigel Sat, 26 May 2007 04:28:23 +0000 http://www.sangod.com/?p=140#comment-3022 I worked for a company who had a roof collapse during a storm, pouring immense amounts of water onto all the kit in the computer room. In fact there was water pouring out of the 3 holes (3-pin sockets in the UK) in some of the regular power outlets on that were fixed to the columns that supported the roof. Yes your reading that right, there were waterfalls or rain water pouring out of live electricity outlets! There was a huge IBM i890, two Compaq EVA5Ks, a bunch or HP/Compaq server and some Dell servers. Amazingly, the only issues were with a few of the Dell servers! The HP servers were picked up and tilted to pour the water out! When they were plugged back in they fired right back up and got on with the job. I worked for a company who had a roof collapse during a storm, pouring immense amounts of water onto all the kit in the computer room. In fact there was water pouring out of the 3 holes (3-pin sockets in the UK) in some of the regular power outlets on that were fixed to the columns that supported the roof. Yes your reading that right, there were waterfalls or rain water pouring out of live electricity outlets!

There was a huge IBM i890, two Compaq EVA5Ks, a bunch or HP/Compaq server and some Dell servers. Amazingly, the only issues were with a few of the Dell servers! The HP servers were picked up and tilted to pour the water out! When they were plugged back in they fired right back up and got on with the job.

]]> By: SanGod http://blog.50micron.com/2007/05/19/bulletproof-storage/comment-page-1/#comment-2873 SanGod Tue, 22 May 2007 18:11:36 +0000 http://www.sangod.com/?p=140#comment-2873 What I can't believe is that insurance companies will underwrite a datacenter built in any unstable location. When I worked at Intuit, ages ago, they actually relocated their corporate datacenter from the environmentally stable Tucson, Arizona to the side of a cliff overlooking a fault-line north of San Diego California. Logic? I think not. What I can’t believe is that insurance companies will underwrite a datacenter built in any unstable location.

When I worked at Intuit, ages ago, they actually relocated their corporate datacenter from the environmentally stable Tucson, Arizona to the side of a cliff overlooking a fault-line north of San Diego California.

Logic? I think not.

]]> By: tim http://blog.50micron.com/2007/05/19/bulletproof-storage/comment-page-1/#comment-2834 tim Tue, 22 May 2007 05:11:13 +0000 http://www.sangod.com/?p=140#comment-2834 I never understood anyone putting ANYTHING of monetary value in New Orleans. I can't imagine it's not a hell of a lot cheaper to just pay the lease on the fiber to have it somewhere *more reliable*, than to replace all that hardware. I never understood anyone putting ANYTHING of monetary value in New Orleans. I can’t imagine it’s not a hell of a lot cheaper to just pay the lease on the fiber to have it somewhere *more reliable*, than to replace all that hardware.

]]>