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-1
votes
0answers
17 views

RAID 1 without cache protection - ZCMP/backup battery

I'm running RAID 1 on an Adaptec 6405. I'm trying to decide if I need to install the ZCMP on the card to provide Cache protection. Adaptec's ZCMP is the equivalent of a BBU - battery backup for the ...
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
32 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 ...
0
votes
0answers
23 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
30 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
48 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
38 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
58 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
63 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
42 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
38 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
157 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
39 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
52 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 ...
22
votes
2answers
451 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
98 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
153 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
216 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
67 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 ...
0
votes
0answers
40 views

recover mails from qmail folder to readable emails (ie. thunderbird)

I have or rather had a VPS running on Viruozzo with Plesk Panel on top of it. Plesk Panel broke down beyond repair, taking qmail in its fall.. I can get to the folders with all the messages (maildir: ...
2
votes
1answer
291 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
70 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
190 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 ...
0
votes
3answers
112 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
50 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
277 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
833 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
441 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
184 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
104 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
75 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
250 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
383 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
63 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 ...
0
votes
1answer
60 views

AWS ElasticCache - Cross Site - Disaster Recovery

I'm using AWS ElasticCache (MemCached) and can see how instances can be created at different data centers/sites. (eg: singapore A or B) There is no AWS Automatic Replication of ElasticCache from ...
0
votes
1answer
211 views

Exchange 2010 two nodes disaster recovery

I currently have one on-premises Exchange 2010 Std server sitting on a Windows 2008 R2 Entreprise. The server is backed-up on tape and now I've been asked to add an off-site replication for businness ...
3
votes
3answers
292 views

Out of band notification when UPS loses mains power?

We're currently looking into upgrading our UPS and possibly having a small petrol generator on site in the eventuality that the UPS battery is used long enough to drain it completely. Realistically, ...
0
votes
2answers
158 views

Accessing data on SAS drives if server fails

If my server goes down, how can i access the data on the SAS drives? I don't have another server to plug them into, and even then connecting the drive to a different controller (while keeping the ...
4
votes
3answers
546 views

Recovering with DDRescue Cannot Complete (write error: Read-only file system)

I'm trying to recover a corrupt VDI using vdfuse to mount the VDI and using dd_rescue to rescue the borked partition. dd_rescue seems to be working fine but once it reached about half of the ...
2
votes
0answers
973 views

Exchange 2010 Database dirty shutdown

We experienced a power failure, after i bring the server up the Mailbox database is on a dirty shutdown state. I've ran eseutil /r E00 and got PS E:\BACKUPS_MDB_EXCHANGE\Mailbox Database ...
4
votes
1answer
63 views

Blackberry Outage: How can I PIN a large number of users?

We lost power due to the hurricane and need to notify BES users that services will be restored soon. How can I extract all BES users and send them a notification message? Also how do I alter the ...
0
votes
1answer
271 views

Drive cloning dd or rsync/sync via KVM

I've got a crash and the system won't boot correctly. I am getting errors like: ata3.00: status: { DRDY } ata3.00: status: { UNC } What would be the best way to save the main drive to make the ...
1
vote
2answers
239 views

Uptime concerns in case of AWS outage

I am running an Elastic Load Balancer backup by 2 instances in different Availability Zones in US East. I am using Multi-AZ RDS as well. Ideally this should ensure that if one AZ goes down, it should ...
1
vote
2answers
141 views

How to monitor how much data transfers between Exchange servers in DAG?

I recently installed a second Exchange Server (standard, 2010) to our organization as part of a Disaster Recovery solution. The two servers will soon be part of a DAG. Before placing the server at ...
1
vote
3answers
400 views

switching dns server providers

I'm trying to wrap my head around something that I thought I kinda understood, but clearly there's some piece missing. We're currently using Zerigo as our primary dns, with slave dns running on ...
6
votes
2answers
429 views

Active Directory Disaster Recovery in a Small Business

This is hypothetical question, but one I’m sure that someone must have encountered and/or given some thought to before. Situation: Consider this, a small business is running an Active Directory ...
5
votes
2answers
1k 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 ...
3
votes
3answers
2k views

If DNS Failover is not recommended, what is?

As a followup question to his very popular question: Why is DNS failover not recommended?, I think it was agreed that DNS failover is not 100% reliable due to caching. However the highest voted ...
5
votes
4answers
269 views

Virtualization for hardware resiliency?

Can anyone tell me if it is possible to pool several physical servers to run a resilient virtualization environment. Our servers are getting more and more critical to our clients and we want to do ...
-3
votes
2answers
52 views

What's the possible issue when i connect an hard disk and Windows Disk Management tell me “Disk is not initialized”? [closed]

I've a disk to recover. The problem is that when i connect it via Usb to Windows, Disk Management tell me "Disk is not initialized". So i try to inizialize it flagging "MBR" or "GPT" but Windows ...