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2
votes
0answers
7 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 ...
-5
votes
0answers
16 views

Windows File Server realtime replication for Disaster Recovery [on hold]

I wonder what you consider could be the best solution for a Windows File Server realtime replication with following features : Email Logging Open file supports LAN/WAN Dashboard (optional) Realtime ...
5
votes
3answers
225 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 ...
1
vote
3answers
29 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 ...
2
votes
1answer
42 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, ...
-2
votes
0answers
16 views

server image restored to new hardware need to update from centos 5 to centos 6.6 [duplicate]

I had a hardware failure on a server which resulted in data loss, so the server's image needs to be restored from backup to a new server, newer hardware. However, the new hardware is only recognized ...
1
vote
1answer
47 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
67 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
1answer
37 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 ...
2
votes
1answer
155 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 ...
1
vote
1answer
81 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 ...
2
votes
1answer
93 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
74 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 ...
1
vote
1answer
154 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. ...
2
votes
1answer
142 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 ...
1
vote
0answers
133 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 ...
0
votes
0answers
16 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
58 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 ...
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
1answer
79 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 ...
1
vote
1answer
115 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 ...
0
votes
1answer
193 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
1answer
106 views

Amazon EC2 VM Import Connector Backup Strategies

I'm trying to get information on this connector but most of what i'm finding seems to be rather old info. My ultimate goal is to have my production virtual machines (esx 5.1) backed up to EC2 servers ...
1
vote
2answers
122 views

Rebuild home directory after deletion

This is what happened: root@rasp:~# ls -al total 72 drwx------ 8 root root 4096 Jan 22 21:01 . drwxr-xr-x 25 root root 4096 Sep 11 14:27 .. -rw------- 1 root root 8079 Jan 22 19:55 .bash_history ...
0
votes
1answer
108 views

How to perform Hardware disaster recovery with backup server

I have a two windows server 2003 R2 servers with same configuration(same processor,same motherboard etc). One is original server and another one is backup server(Not to store backup files,it is a ...
0
votes
1answer
93 views

Can proprietary SATA/SAS drives be used in a standard SATA controller

If I take SATA or SAS drives out of a Dell or HP server and install them in a different machine with a standard SATA or SAS controller will they still be readable? Obviously if they are part of a ...
0
votes
1answer
78 views

What would happen if I disconnected a child domain from it's forest domain controllers?

Windows 2003 native mode. One domain controller on-site, read-write, no RODCs. DNS is running on the DC onsite. Servers would be pointing to the DC for DNS and authentication. How long would the ...
1
vote
1answer
110 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 ...
1
vote
1answer
502 views

iSCSI Datastores not found after Power Failure

I have an ESXi 5 host running 3 virtual servers. 1 of these servers uses a datastore via Software iSCSI on a separate piece of hardware. When the two hardware servers (storage and host) experience ...
0
votes
0answers
41 views

Need Exchange disaster recovery utility

I am looking for a good utility which can support me for exchange disaster recovery. Actually, one of my client was trying to migrate multiple mailboxes from source edb to live exchange server. But he ...
2
votes
1answer
76 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 ...
24
votes
2answers
551 views

Retrieving an RSA key from a running instance of Apache?

I created an RSA keypair for an SSL certificate and stored the private key in /etc/ssl/private/server.key. Unfortunately this was the only copy of the private key that I had. Then I accidentally ...
0
votes
1answer
354 views

How to get Mondorescue to work with LVM2 (CentOS 6.4)

I'm trying to make an emergency recovery disk with Mondorescue to: Restore my server in case of hardware (or severe software) failure. Make an "identical" server setup for debugging and staging. ...
3
votes
3answers
272 views

Probability of Blade Chassis Failure, Redundancy

Suppose I have a blade server HP C7000, with three blades. Q1. Is there any disaster recovery technique that provides redundancy between blades? If any one blade goes down the second should come up ...
1
vote
3answers
427 views

Replicating databases using Dell equallogic

Can the Dell Equallogic 6100/4100 replicate databases like mysql, MS SQL 2012, and Oracle 11g? I would like to set up my web applications and their databases in VMWare 5. They would run off the ...
2
votes
2answers
77 views

(Financial exchange) colocation and DR sites

As far as I understand it, firms that colocate their servers with a financial exchange do so only at the primary site. (Correct me if I'm wrong). So what happens if the primary site goes up in flames ...
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 ...
2
votes
1answer
76 views

Best way to test disaster recovery in a virtual environment

We are using vCenter, eSXi 5.1 and Acronis vmProtect to run and backup a network of virtual machines, both windows and *nix based. it is the latter I am interested in today. Some of these still run ...
0
votes
1answer
350 views

RAID1 - Possible to recover failed drives?

PowerEdge 1850 has two physical hard drives, configured as RAID1. Accessing via DRAC 4/I I can see that both drives indicate Failed & Offline. However, the DRAC log indicates that both drives ...
1
vote
3answers
267 views

Small office backups, small NAS (RAID) vs single disk

Assume a small office situation, 5-10 workstations (PCs), and a Windows server hosting a network share. The Windows server is in a 3+1 RAID 5. I am debating with myself over a backup solution and I ...
0
votes
4answers
55 views

Restoring system settings files after making bad changes?

I've installed centos in a vmware vm in attempt to learn more about system administration. Unfortunately, I was unable to ping the host machine (win7) from the vm or vice versa, even though a third ...
2
votes
1answer
827 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 ...
0
votes
2answers
2k views

can i say “NO” to “Clone multiply-claimed blocks” in fsck?

I need to know if i can still mount the volume when i tell fsck "no" in that question. i dont need to repair all the files in the volume, i just need recover one single file for this event. the ...
0
votes
2answers
1k views

How to mount parition in from a working driver in RAID1

One of hard drives in array is dead, I'm unsure if it's raid0 or raid1, what I'm trying to achieve is mount the working drive and make a backup of what's left. If I mount /dev/md127 then I can see ...
1
vote
2answers
571 views

Best Disaster Recovery Setup for Domain Controller with Additional Services

I'm setting up some new Windows 2012 servers to replace old ones currently on 2003. One of my concerns is to try and have a suitable DR plan to get them back up and running if we have a major failure. ...
1
vote
2answers
131 views

Bare-metal recovery on dissimilar hardware [Win/Linux]? [closed]

I'm planning a disaster recovery for our servers, and have been looking at this solution. I know of Clonezilla, but it does not entirely comply to the "different hardware" part. I could still ...
1
vote
1answer
90 views

Virtual installation vs bare metal for disaster recovery

I am part of an service company that has a server solution that hosts different field software to talk to industrial alarms and such. The original implementation didn't make use of any kind of ...
1
vote
2answers
450 views

Transparent geographical DR website failover

We've already got webservers that are loadbalanced. And even though outages shouldn't happen, they do, for a variety of reasons. (central switch failure, misconfigured ISP routers, backbone failures, ...
3
votes
3answers
422 views

How can I create a “fail whale” for my website?

I have a website that we load-balance across a few machines. The load-balancer (a Brocade ServerIron ADX) is on the local network. I know it has the capability to configure a "backup" ip address to ...
0
votes
1answer
66 views

Recovering Exchange 2010 from only one server

We've following setup: a) Physical server Hyper-V Exchange 2010 CAS 1 Exchange 2010 MBX 1 b) Physical server Hyper-V Exchange 2010 CAS 2 Exchange 2010 MBX 2 We do backups. But for the sake ...