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2
votes
2answers
1k views

Hadoop HDFS Backup & DR Strategy

We are preparing to implement our first Hadoop cluster. As such we are starting out small with a four node setup. (1 master node, and 3 worker nodes) Each node will have 6TB of storage. (6 x 1TB ...
0
votes
0answers
16 views

Zimbra 7.1.4 disaster recovery within the LDAP service

We've a disaster in our Zimbra 7.1.4 server. The server is (was) running on a CentOS 6 box and it failed on the last friday. After doing a lot of effort to make the machine boot once again Zimbra ...
2
votes
2answers
41 views

Missing VirtualDisk on bootup (RAID)

I have a Dell PowerEdge 2950 with DAS storage attached (MD1000) I rebooted the server to apply window updates (win2008), on restart BIOS detected a VirtualDisk was missing and wanted me to continue or ...
0
votes
1answer
34 views

LVM2: pvscan with offset?

After I played with mdadm a bit too hard, I'm now tryng to recover my lvm2 volumes that were sitting in the original RAID1 array. pvscan finds nothing, but that's not a surprise: since mdadm is not ...
0
votes
3answers
360 views

Disaster Recovery - using Double-Take for live replication to DR on a developer's client machine with Visual Studio running

Our Systems team is implementing Double Take on client machines for live replication to DR servers. Developer's desktops typically have multiple instances of Visual Studio open at all times which ...
0
votes
0answers
26 views

Recover rm'd files from last day? [closed]

TL;DR: Can you recover only the files that were deleted today? I'm in the process of testing different linux distros as I haven't found the right one yet. Part of this testing involves mounting a ...
4
votes
2answers
139 views

Business Continuity and Disaster Recovery Plans

My company is looking for outside assistance in (re)putting together our BC and DR plans. How do you judge companies from one another in this arena?
2
votes
1answer
928 views

Recover mdadm RAID 10 array: listing all as spares

I'm a bad person and haven't backed up my RAID elsewhere. I now have a RAID10 array that won't assemble, and I'm hopeful I can save it. Here's the details: I have five hard drives set up as RAID10 ...
-1
votes
1answer
37 views

MySQL recovery procedure [closed]

After the server die, I have "old" HD (it is external now) with sock file and data files in mysql directory. Where I should find information how to restore the data in fresh installed MySQL? What ...
0
votes
1answer
25 views

Salvaging inaccessible MySQL db without InnoDB log files

In the past few weeks, I have been playing with the configuration of our test MySQL server, without first making a mysqldump of applications running on it. Aim was to increase performance and enable ...
2
votes
2answers
434 views

How can I recover overwritten labels, pointer blocks and ueberblocks in a ZFS pool?

I caused a stupid accident in a single-disk ZFS pool, seemingly in the same way as the person in this mailing list thread, i. e., I seem to have overwritten important metadata. Can this be restored ...
4
votes
4answers
456 views

How do you properly do Disaster Recovery for a file server?

We are currently working on implementing a DR strategy for a windows file server. We have ruled out Storage Replication because it is a preview feature, and Failover Clustering is designed for ...
0
votes
3answers
8k views

How long does it take to rebuild a drive in a RAID 6?

I'm building a 7-disk RAID 6 array on a DELL MD3000 DAS box. My top priority is storage space, so I'd like to use 2TB drives -- but I'm worried about how long it will take to rebuild a failed disk. ...
4
votes
1answer
77 views

DRBD as DR: syncing datastores of 2 ESXI hosts, vmdk consistency?

does anyone have experience with using DRBD (protocol C) to sync parts of the datastores of 2 esxi hosts for disaster recovery of selected guests? I have 2-3 guests that should be able to recover ...
0
votes
1answer
532 views

vmware site recovery manager - site A to B and B to A

I will Need to clarify few faqs on vmware SRM, my situation is, i have 25 VMs in site A, and 5 VMs in site B. I need to protect both sites and should be able fail back site A to B and B to A, does ...
5
votes
3answers
264 views

Is DFSR designed for use for Disaster Recovery?

We are currently working on implementing a DR strategy. Instead of SAN-SAN replication, it has been decided to have 2 live file servers replicating via DFSR. However, I don't know whether or not this ...
7
votes
3answers
3k views

Active Directory disaster recovery with DPM

I have a sort of catch-22 question here. Suppose I'm using Microsoft System Center Data Protection Manager (2010 or 2012, it works the same way) to backup, amongst various other things, my Active ...
1
vote
3answers
44 views

Replicate EMC LUN to AWS. Is it possible?

Is it possible to replicate a LUN from our EMC VNX5300 to Amazon Web Services? This would be for a disaster recovery scenario. I've talked to AWS and they said to talk to EMC. I've talked to several ...
1
vote
1answer
122 views

Recovering Linux soft raid 5, disk stays as spare

I got disk failure on my Centos Linux soft raid 5 array (mdadm). I replaced one of the disk and started to rebuild the array. Next time I checked the status, the rebuild was failed. This is the ...
2
votes
1answer
52 views

CentOS - Accidentally Moved and Removed /home/ folders

I ran (stupidly) these commands: mv ncdu/ /home/* mv ncdu/ /var/* Trying to move the ncdu folder into these directories. And it caused me to remove all my Apache directories in my /home/ folder, ...
0
votes
1answer
2k views

Exchange 2007 - Mailbox Database Recovery

Exchange 2007 edb Can we restore Exchange edb (First storage group\mailbox database.edb) to another exchange server ? Do I just copy the edb to the new exchange server and delete the first storage ...
16
votes
9answers
1k views

Documentation As-A-Manual vs. Documentation As-A-Checklist

I've had discussions in the past with other people in my department about documentation, specifically, level-of-detail and requirements. In their view, documentation is a simple checklist of Y things ...
1
vote
1answer
69 views

Using duplicity in a disaster recovery scenario

I am using duplicity for backups on my Debian servers. I have successfully backed up and restored files using duplicity. In my backup script, I have /usr/bin/dpkg --get-selections > ...
0
votes
1answer
87 views

Simulating failover DR test. After moving mailboxes, Outlook clients can't connect

I have an Exchange 2010 SP3 DAG with 7 servers (3 in production, 3 in DR and a LAG). I have 2 CAS Arrays simply named casarray1 and casarray2. casarray1 sits in production and has the three production ...
2
votes
2answers
354 views

Data Recovery [closed]

I am looking for a way to recover data off a perfectly good external HDD. Not a problem usual. The drive was being used as a backup drive for computers that I was working on during a reformat. ...
8
votes
1answer
1k views

Recover data from SCSI hard disk

We've got an old server with SCSI hard disk. The server crashed last week and it isn't exactly known what hardware component is damaged. Since the server is due to be retired anyway we don't want to ...
2
votes
1answer
45 views

How can I test my DR on Netapp without stopping replication?

I have two Netapp filers running ONTAP 7-mode with some volumes on the main one replicated to the secondary one on another site. I need to regularly test my DR, but I can't break the replication ...
0
votes
3answers
1k views

RAID 5 Recovery software help - Test Disk

on the test disk website: http://www.cgsecurity.org/wiki/TestDisk it states that it can be used to recover data off raid 5 has anyone found any guides on how to do this? or if someone knows how ...
2
votes
1answer
1k views

Exchange Server 2010: move mailboxes from recoveded and mounted edb to user’s mailbox

One of our exchange servers crashed, and I am trying to recover the mailboxes. We had 1 exchange 2003 server named "apex" and 1 exchange 2010 server named "2008Enterprise. the exchange 2010 server ...
2
votes
1answer
190 views

Method for offsite backup of EC2 servers?

We run a dozen or so Ubuntu Linux webserver production instances on Amazon VPC. The instances are bootstrapped and managed via Puppet. Most management is done via the AWS Console. Our AWS credentials ...
0
votes
2answers
415 views

Full Server off-site backup for a small business

I work in a small company which is getting bigger all the time. We have out grown our old backup system (a Small NAS box and Sugar Sync) and would like to move to something better... We currently ...
1
vote
1answer
103 views

*Lab* restored DC from full backup issues. NETLOGON error 67

I am in a lab environment practicing and learning to recover my primary domain controller in the event that both my DC's are gone and I have a full server backup in place for disaster recovery in ...
1
vote
1answer
84 views

Do both Active Directory servers need to see each other for replication?

I'm trying to set up a remote DC for DR, and I've chosen to put it in AWS in a VPC with our other servers being backed up. I can restrict that with security groups to only accept traffic from the main ...
2
votes
1answer
161 views

Active Directory backup/restore without DSRM

I'm trying to backup my local DC to AWS for DR. When running locally, a system state backup and a restore through DSRM works fine. Unfortunately, a server in DSRM fails to boot in AWS (a situation ...
2
votes
1answer
119 views

How to recover deleted root of linux system?

The story: I am using Ubuntu for my website. For a backup plan, I wrote a script. I wanted to mount an external drive, (run through crontab), backup the server, and then umount it, every night. I ...
1
vote
1answer
195 views

SAN Synchronous Replication and SQL Server - Is RPO of 0 possible?

I am working on a solution that is using SQL Server 2012 SP2, but without the use of AlwaysOn availability groups. This is due to cross-database transactions, that does not work for this scenario. ...
1
vote
4answers
1k views

Accidentally formated external usb harddrive (500GB) with bootable iso (1GB), how can I recover my data?

I was attempting to create a bootable usb thumbdrive from the ubuntu install cd using UNetBootin. Unfortunately, I accidental wrote the live cd to my 500gb usb external drive (which was almost ...
1
vote
0answers
155 views

Need help recovering CentOS system

My CentOS 6.5 system was getting errors about the hard disk so I used partclone to clone the root filesystem. Just 2 days later the hard disk died and the system would no longer boot. So I replaced ...
3
votes
2answers
3k views

Recovering a Hyper-V vhd from a snapshot

I'm going to leave out tons of related info that I hope isn't relevant to keep this lean - feel free to ask for detail. My host is a Windows Server 2008 Standard SP2 (not R2). Last February we had ...
0
votes
0answers
17 views

Trouble “turning off” dialtone in Exchange 2010

Given that there are two ways to enable dial tone, I'm having trouble turing it off. The two ways I'm aware of are: Dismount the database, delete it or rename it, mount it, Exchange will prompt for ...
0
votes
0answers
60 views

How do I force an exchange database to become “active” in “Active Manager”

How do I force a passive node to become "active" when the active manager says it's needing a full sync? Background We had a catastrophic failure where all that remains is a single edb file. No ...
14
votes
7answers
15k views

Unmount a nfs mount where the nfs server has disappeared

Server A used to be a NFS server. Server B was mounting an export of that. Everything was fine. Then A died. Just switched off. Gone. Vanished. However that folder is still mounted on B. I obviously ...
19
votes
5answers
2k views

BBWC: in theory a good idea but has one ever saved your data?

I'm familiar with what a BBWC (Battery-backed write cache) is intended to do - and previously used them in my servers even with good UPS. There are obvously failures it does not provide protection ...
2
votes
5answers
235 views

Do you maintain an OMG it's !@#$ed CD with Utilities to recover and clean computers? What is on it? [closed]

I'm getting ready to build one with some of the common apps I use including malwarebytes, Spybot, and memtest86 . What elese do you recommend I add? Is there a single CD image out there that has all ...
6
votes
2answers
258 views

Green System Administrator looking for helpful tips [closed]

I have just been promoted to Systems Administrator for our product. We are designing a application that communicates with the cloud(Amazon EC2). I will be in charge of maintaining all Instances and ...
2
votes
1answer
88 views

Windows 2012 BCD process to boot from replicated LUN for Boot from SAN

For our infrastructure we have a production site and a disaster site with SAN-based replication for the LUNs on the Windows servers. So for our proof of concept we have one server on the production ...
2
votes
1answer
84 views

Add Windows 7 Repair to USB toolkit

I am putting together a Rescue USB and I was wondering how i could add the Windows repair tool to it. I know you can boot a full windows installation and choose "repair my computer" but I dont have ...
0
votes
1answer
216 views

Identifying RHEL disk other than by UUID in /etc/fstab for Disaster Recovery from another site

For our disaster recovery setup there is a set of disk which are replicated from our production site to the disaster site. On the production site the RHEL servers have /boot filesystem setup on disks ...
0
votes
2answers
935 views

How to recovery a 5TB raid 5

We have a 5TB raid 5 virtual disk cluster... I think the MBR got messed up and windows server 2003 no longer is able to view the contents of the virtual disk... All the disk recovery software I have ...
1
vote
1answer
124 views

How can I plan a DR solution for an SAP Instance running on HP-UX

I'm supporting an environment that runs SAP on HP-UX. The HP Blade running the SAP Instance is connected to IBM Storage over FC connection. SAN Infrastructure is duplicated by redundant ...