A snapshot is a copy of data taken at a specific point in time.

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Replication with Veeam causes timeouts on large VM's

I have been trying to replicate two of my larger VM's one being Exchange 2003 and once the snapshot begins to commit the server begins to time out. I have updates my ESX hosts from 4.0.0 to 4.1 and ...
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2answers
129 views

ESX Free: Creating clones of VMs to run concurrently as a branch version

I have ESX free (most recent version 5.X) installed on a standalone server with an internal datastore in a RAID 5 setup. The VMs will be Windows mostly with some Linux and will be dedicated to ...
6
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2answers
219 views

VMWare/ESX Snapshots vs Libvirt snapshots vs LVM2 snapshots

In VMWare, when a snapshot is taken, my understanding is that it creates delta disks, and any writes that occur after the snapshot is created will be written to these new delta disk images, and not ...
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61 views

ESX: allowing users to snapshot VMs without vSphere Client Access

I am using ESX (latest free version 5.X) to host multiple VMs (mainly Windows with some Linux). Users will have control of these VMs and should be able to snapshot them, however I don't want to deal ...
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1answer
87 views

best way to create lvm snapshot of / partition [closed]

I need to know the best way to implement the snapshot of root partition "/" on a kvm guest. What I have is as follows 1- /dev/vda ..... 10G free -- /dev/vda1 boot partition (ext - 83) -- ...
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1answer
68 views

Can i have 400 snapshots in Amazon Ec2 if they are incremental only

I want to know about snapshotting. Amazon says that they make Incremental backups Only charge for the data chnaged between snapshots Now my question is let us suppose the only data which change ...
2
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2answers
461 views

Export snapshot from VMWare Workstation 8

How to export virtual machine from VMWare Workstation 8 to another physical computer with installed VMWare Workstation 8? i.e. how to move snapshots between different instances of VMWare Workstation ...
6
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2answers
836 views

Large number of snapshots on a ZFS system

Here's my scenario: I have two servers (well many more, but two for this scenario), one is a Solaris backup server, the second is a CentOS Linux Server. Every night the CentOS server runs a cron job ...
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1answer
4k views

NetBackup with VSS and Instant Recovery - Failing to delete old snapshots

We are attempting to implement Microsoft VSS for snap-shotting in our NetBackup 6.5.3.1 environment. The clients are both 32 & 64 bit Windows 2003 Server. Snapshot parameters are: Instant ...
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1answer
115 views

LVM+MongoDB. Dropping in speed of backup creation

Till recent time we have been making mongo backups archiving LVM snapshot on hidden SECONDARY server with RAID10 on SAS disks. Currently operation on making snapshot from volume with 500 Gb of data ...
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1answer
46 views

Switching Applications server on different VM snapshot

I have a VMware VM running with a specific Application Server. Instead of creating a new VM for install a new application server, Is it a good practice creating a snapshot of old Application Server ...
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2answers
454 views

Does speed of ZFS snapshot rollback depend on number of files?

I have tested a 10Gbit connection between two hosts to be able to read a 10GB file from host1 and write it to host2 using netcat, where the speed was 410MB/s. When I ZFS send/receive again with ...
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0answers
27 views

EBS Snapshot backs up Instance - Is S3 also needed?

I have spent lots of hours reading about EBS & S3 backups. I believe this is the proper approach for our needs but I am not a SysAdmin. Setup: 1 EC2 Server w/ apache & database Over 250000 ...
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10answers
5k views

Best compression for ZFS send/recv

I'm sending incremental ZFS snapshots over a point-to-point T1 line and we're to a point where a day's worth of snapshots can barely make it over the wire before the next backup starts. Our send/recv ...
6
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2answers
429 views

What does zfs receive -F do?

When I read man zfs for zfs receive I see -F Force a rollback of the file system to the most recent snap- shot before performing the receive operation. If receiving an ...
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1answer
170 views

Hyper-V Missing Virtual Server From Hyper-V Manager List

We are running Hyper-V on a Window 2008 server that doesn't have a desktop (only console login is provided). We access Hyper-V using Hyper-V Manager which connects to this host-server and it provides ...
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1answer
46 views

Is it possible to quiesce a snapshot of a running server on an Esxi and back it up to a remote network several times a day?

There's an outside consulting company claiming that they are taking a snapshot of our local servers which reside on a VMWare Esxi, 4 times a daily while our servers are running. This snapshot is then ...
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1answer
137 views

Snapshot a KVM guest with non-file storage

I am preparing at least one Windows 7 guest on a KVM Linux (ubuntu) host. I have made an LVM-based storage pool which I would like to use. My main concern is snapshots. The disk-image will be ...
2
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2answers
867 views

Quickest way to merge snapshots in VirtualBox

I have vdi with quite a number of snapshots taken from it - say, 50 or 70 snapshots. I want to have one plain vdi with a current state. These snapshots take way too much disk space and are not needed ...
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5answers
6k views

How do I delete ESXi vm snapshots using the least additional space possible?

We have a tree of about 15 snapshots of a virtual machine that runs Win2k8, as you may guessed our datastore is soon to run out of space. My objective is to delete all the snapshots, as it seems it ...
2
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1answer
158 views

Multi-Generation Snapshots using Device Mapper (Linux)

LVM is an amazingly useful tool, however, it seems to still lack support for snapshotting a drive that is already a snapshot. I made a script to handle this automatically but ran into some troubles. ...
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3answers
78 views

vmware 5.1 Upgrading and Snapshots

I'm planning on upgrading my environment to vmware 5.1 soon and was wondering if anyone here might know anything regarding snapshots taken prior to the upgrade: Will I need to take a snap shot after ...
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2answers
1k views

How to determine optimal size for LVM snapshot?

I'd like to create a backup script that uses LVM snapshots during backup. This script will run on several Linux machines. I'd like to avoid creating snapshot that is too small and gets full during ...
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1answer
146 views

lvconvert --merge how to undo?

I have created a script for users who work on KVM virtual machines to be able to perform lvm snapshots on the logical volumes where their VMs are installed. Snapshot restores are performed via ...
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1answer
63 views

LVM Snapshot confusion

I think I understand some of the lvm snapshot concept, but am confused about one last thing. After you take the snapshot, if you don't mount it, will it be active? What I really want to know is will ...
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4answers
510 views

What does an LVM2 Snapshot contain? [duplicate]

Everything I read makes me think an lvm snapshot is a direct copy of the logical volume that was snapshot(ed), but how can that be when it takes 10 seconds to snapshot a 90 gig logical volume? If I ...
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3answers
1k views

Is it possible to copy a snapshot and associate it to another VM (which has same configuration)?

I am having two virtual machines with same OS and software list. (In fact they were cloned). Now I have installed an application in a VM and taken a snapshot. Is it possible to copy this snapshot ...
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2answers
336 views

What are the tradeoffs between using hypervisor- vs. storage-array-based snapshots as backup sources?

Suppose you have some virtual machines (running in eg. ESXi) that are stored on an iSCSI storage array (eg. EqualLogic PS4110). Now suppose you want to set up a backup and restore regime that looks ...
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1answer
100 views

How do I sync disks in a Windows guest before doing a snapshot?

In general, before doing a disk snapshot of a virtual machine instance, the disk has to be synced to ensure that all buffers have been written to disk. If the guest operating system is Linux, you can ...
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0answers
71 views

Windows WMI get a snapshot EnabledState

I am trying to get the EnabledState of a virtual machine snapshot using WMI. That is I try to get the EnabledState that was current for the virtual machine when the snapshot was taken. So far I know ...
2
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1answer
378 views

I can't mount a LVM snapshot on a XEN host

I'd like to backup my XEN VMs by copying-rsyncing a LVM snapshot. I'm trying to mount a snapshot that contains a XEN guest's virtual disk (ext4). Below are all the steps I follow. I can't mount the ...
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1answer
2k views

export XenServer snapshot as file via console

I have created a snapshot of a Citrix XenServer virtual machine using XenCenter, and now I would like to save this snapshot as an *.xva file, just as if I right-click on the snapshot icon in XenCenter ...
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2answers
3k views

How to hot backup/snapshot an ext4 partition (in the absence of LVM)?

I'm currently tasked with bringing up a existing server to (at least more) professional standards - with as little disruption as possible to end-users. To have a proper rollback, I need to backup the ...
2
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1answer
672 views

Possible to make a script to simulate a VM Snapshot with pass-through disk?

I have Windows Server 2008 R2 with Hyper-V and one VM with a Pass-Through disk. Naturally I can't take a snapshot (it's a limitation of Hyper-V) but can I use a scrip to the unmount disk, take a ...
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1answer
81 views

Cloning instance - Original kernel not available when creating AMI

I have a EC2 Ubuntu server on Amazon cloud and I'm trying to clone an instance "X" by creating a snapshot of the instance and creating an AMI from that snapshot. The problem is: When creating the AMI, ...
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2answers
3k views

Snapshot copy a VM to USB attached to ESXi 5.1 host

I was trying to script a snapshot backup of running VMs to a USB drive attached to the host. We are using the free hypervisor version of ESXi and do not want to purchase 3rd party products to do this. ...
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1answer
154 views

MongoDB Disaster Prep on AWS

I'm looking for best practice advice covering MongoDB disaster recovery within an AWS hosted environment. Our setup is fairly standard at this point, replica set of 3 servers (1 primary, 1 secondary, ...
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2answers
1k views

Do VirtualBox snapshots take up space?

When I remove a snapshot, it just says 'Merging differencing image'. I don't know how much room each snapshot is taking. It's certainly not copying everything.
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1answer
570 views

Hyper-V snapshots exist after Shut Down

I'm running a virtual machine (hyper-v) on an Windows Server 2008 R2 64-bit machine. I want to increase the hard drive size but the edit button is not enabled. The notice says "...snapshots exists ...
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1answer
142 views

Hyper-V - Not your standard V2V

The main question is: Can I perform a Virtual to Virtual Conversion from one Hyper-V Server to another Hyper-V Server? Why I need to convert instead of a myriad of other options: We've got a RHEL 5 ...
2
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2answers
604 views

Disable automatic snapshots on vmware server

Is there a way turn off the automatic snapshot feature in vmware server? (Or is that a bad idea for some reason?) We have the files on the machine backed up separately, so I don't see the need for ...
2
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2answers
2k 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 ...
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2answers
416 views

Why are all of my ZFS snapshot directories empty?

I'm running an Oracle 11 box as a ZFS storage appliance, and I'm taking regular snapshots of the ZFS filesystems, via cron. In the past, I know that if I wanted to grab a particular file from a ...
3
votes
2answers
676 views

Checking for orphaned snapshots - ESXi5

So we had some issues with our passive mail node over the weekend doing vmtools updates and to resolve a problem we had to revert to a snapshot and then reseed all the databases across. All in all ...
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0answers
207 views

Samba 3.5 Shadow Copy for Windows 7

Over the past several days I have been trying to get the shadow to work with samba but haven’t been successful. Can someone check below config and let me know if I am missing something? We are using ...
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1answer
102 views

windows server creation from amazon ec2 snapshot

I created a windows 2003 instance on Amazon EC2, I created the snapshot for backup. Now I am creating the volume from that snapshot and try to attach to a new windows 2003 server. I am able to up ...
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1answer
162 views

XenServer and Quiesced snapshots

At work we use XenServer to administrate all the VM's. Now I wrote a script which enables Linux machines quiesced support. The script works absolutely fine. It activates if someone triggers a quiesced ...
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0answers
82 views

Creating a snapshot of an attached EBS volume is not working

I'm trying to create a snapshot of an 8GB volume attached to another instance whose device is named sdh5. I originally created this volume myself and mounted it as an ext4 filesystem. Now I'm trying ...
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4answers
2k views

How to keep or drop LVM snapshot?

I have made an LVM snapshop by lvcreate --name snap --size 10G -s /dev/vg00/vm What command should I write if I want to drop the snapshot, and not keep the changes that have happened since the ...
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3answers
73 views

Revert a VM client from within the VM Client - is it possible?

I am creating a test VM (esxi V5) client for our QA department. Once it's installed, my options will be: Use a snapshot Use non persistent disk on the hard disk. For either options, I can give ...