Failover & Disaster Recovery
What's the difference between failover and disaster recovery? ...
disaster-recovery
Backup and disaster management plans for mysql database..
I've got a multi-user application having some critical data of the users. I am working on the backup and disaster recovery plan for the application.. Would like to know some best practices regarding this.. Thanks. ...
WCF Pub/Sub with subscriber caching
Problem: how to provide a distributed, scalable and disaster resistant pub/sub service with WCF. Details: Note that this approach is being considered in addition to messaging/middleware solutions such as Tibco EMS. I've been looking into WCF, particularly how it may be used to offer pub/sub. On this subject this article is very good:...
Disaster Recovery Template Documents
Anyone have a disaster recovery plan template document that they use to provide to their clients? Our client wants a document that outlines our disaster recovery plan but we really don't have anything like that documented. ...
Undo SVN delete ./* --force
Yes, I know it was stupid, don't rub it in, I'm freaking out here. I didn't realize svn delete would delete my local copy, I just wanted it out of the repository. Now all my files are gone, and they aren't in the trash bin either. Is there any way I can recover them? I should clarify, these files never made it into the repository. I...
What happens when you restore system databases to a SQL Server with a different name?
I'm currently looking at disaster recovery plans and restoring backups of master/msdb/model. In theory if I restore master, msdb, model and the user databases onto a fresh server install (with the same service packs etc) then I will have an exact copy of the original server, with all the maintenance plans and jobs and everything. But w...
High Availability and Disaster Recovery Software AntiPatterns
If you had to audit a Java application for worst-practices when it comes to high-availability and disaster recovery, you would probably look for hardcoded IP addresses and suboptimal caching of bind handles. What else should be considered? ...
When Something Goes Wrong: Good contingency planning?
I work at a small firm with little technical skill/knowledge. One colleague had a hard drive die without any backup, and we recently had a virus come through and infect our test server (the gumblar.cn one) which we may or may not have transferred to a client's server. After these two events, management danced around promoting good prac...
Data Guard Oracle 11g
Hi all, I want to do the disaster recovery in oracle 11g using data guard. But I don't the procedure or the way how to do it. I want all of someone that show me the document or the way to do it. Can anyone help me to do that? Thanks, Ung Sopolin ...
Restore Move of TFS 2008 to server with SQL Server 2008
As part of a disaster recovery test of our TFS 2008 instance I hoped to restore our backups of the database (currently on SQL Server 2005) to SQL Server 2008. I noticed a warning on MSDN that this could make a restore impossible. Has this been done in the wild? What are the risks? ...
Minimum set of files needed to recover a MySQL table (MyISAM and InnoDB)
When recovering a MyISAM table the only file that is strictly needed is the data file (tablename.MYD) - the rest of the files (the index file tablename.MYI and tablename.frm) can be recreated from the data file using REPAIR TABLE. Assume I'm using InnoDB (with the "innodb_file_per_table" setting) instead - what is the minimum set of fil...
Changes to a MySQL InnoDB table - which files are involved and why?
When changing the content of an InnoDB MySQL table the following files on the file system appears to be involved/changed: /path/to/mysql/data/[database]/[table].ibd (due to innodb_file_per_table) /path/to/mysql/data/data/ib_logfile0 /path/to/mysql/data/data/ib_logfile1 /path/to/mysql/data/data/ibdata1 For each of these files: When ...
What source/version control to use for home?
I used to use svn, and I had AnkhSVN setup in visual studio. I ended up migrating the svn server from a linux box to a windows box about 4 years ago. I didn't have a good backup / restore process on that machine, and I'm afraid I lost most of the histories of stuff I've worked on at home when that hard drive died (I know... I know... I...
How to recover a MySQL database: Incorrect information in file: './xxx.frm'
A very important database has gone corrupt that was sitting on server at a shared web host, and I didn't back up. The table contains a large list of very important email addresses. I can get a table listing, but if I open any of the tables with Navicat or phpMyAdmin, I get the following error: Incorrect information in file: './the-table...
Disaster recovery for files on Amazon S3?
We outgrew the disc space on our server some time ago, so I made the decision to move the majority of our user generated content onto Amazon S3. Obvious benefits in saving space, reducing bandwidth cost and spreading requests away from our server which also deals with Apache and MySQL. We have about 150GB of images all in three sizes, s...
How do I re-create a MySQL InnoDB table from an .ibd file?
Assume that the following MySQL files have been restored from a backup tape: tablename.frm tablename.ibd Furthermore, assume that the MySQL installation was running with innodb_file_per_table and that the database was cleanly shutdown with mysqladmin shutdown. Given a fresh install of the same MySQL version that the restored MySQL f...
Does anyone has the experience of using the new p4 replicate command in their Perforce back-up /restore script ?
Hi all, we recently performed an upgrade of our whole perforce system to 2009.02 During this exercise, we noticed that the back-up /restore process that was installed here by the Perforce consultant a year ago was not completely working. Basically, the verify command has never worked (scary !). As we are obliged to revisit our Back-Up...
What is the best way to QA a disaster recover plan?
Considering that you never need to use a disaster recovery plan until disaster strikes, I was wondering what is a way that an IT department can test their disaster recover plans? How do you simulate the failure of key systems? Is there a way to ensure that your testing is as real-world as possible? Thanks for your suggestions. ...
Is there a way to recover registry entries that were deleted using RegDeleteKey?
[I am aware that this might actually better belong on superuser but I thought the programmer perspective might yield slightly better/faster results.] I have just written a sleek new configuration framework for our apps and everything was working just great. There was only one function left to test and that was deleting a registry key (r...
Does anyone know of a free solution to perform failover for VMware ESXi?
I would like to setup a free/custom solution to perform failover for VMware ESXi. The setup is as follows: 2x Physical servers each with independent storage. For each physical server there are 2x Win2k8 Enterprise servers. In the case a physical server completely fails, we want the other (for convenience sake we can assign it with a s...