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16Jan/200

Scheduled backups in cPanel and Plesk

Creating backups is a very important task for every server administrator. A loss of data often occurs suddenly without a warning. It is possible to create backups manually, but we would recommend to configure automatic backups. The steps below were tested by us, but you should always check yourself if the backups are still running from time to time and if it is possible to restore the required data from it! A backup should be stored outside of the system. In the examples below we are using the Contabo Backup Space. You can order it additionally to your server.

Scheduled backups in cPanel

To configure automatic backups in cPanel, please go to WHM > Backup > Backup configuration. At first you have to set the tick at "Enable Backups". Then we would recommend to set the backup to "compressed". With incremental backups, you can not save to FTP in cPanel. The other global settings should be left the way they are.

In the section "Scheduling and Retention", it is useful in most cases to select every day of the week except Sunday and to keep six of those daily backups. Furthermore you should enable weekly backups and keep four of them, just in case a problem is noticed later or with some delay. Please create the weekly backups on Sunday, the day we left out in the section for the daily backups.

If you are not sure what you should backup in the next section, you can just select everything as shown in the image below. If you need to save backup space, you can unselect the system files and change the database backups from "Per account and entire MySQL Directory" to "Per account only". Normally the files and databases of the accounts will contain the most important data and the other parts contain settings that can be reconfigured after reinstalling the server in case of a full loss of data.

The next settings should be left the way they are. Especially the option "Mount Backup Drive as Needed" should be left without a tick, as this will cause problems if /backup is no mount point for a separate partition or drive:

Then please click on "Additional Destinations" at the top of the site. There you can configure the remote storage for your backup. You will find the correct settings for the Contabo Backup Space below. Unfortunately cPanel does not support ftps, so you should leave the tick for "Transfer System Backups to the Destination" unselected. Please confirm and save your data with the option "Save and Validate Option".

Backups can be restored in WHM > Backup > Backup Restoration. There you can select "Restore by Date" and you will see all available backups in the calendar. Please select the date with the last known good state and move the users you want to restore into the restoration queue. With "Restore", you will restore all the listed accounts.

Scheduled backups in Plesk

To configure automatic backups in Plesk, please go to Tools & Settings > Tools & Resources > Backup Manager > Schedule .
On the site, please put a tick at "Activate this backup task". Then select a reasonable time for your backups. As backups require a lot of resources and might slow down your system, you should perform your backups in the night, for example at 2:00 am. In the most use cases it is a good idea to configure daily incremental backups and to perform a full backup once a week. Incremental backups will just store the changes, so it is possible to restore your data from every available day. But the required backup storage is less than with a daily full backup. In the section "Backup settings", you can add a remote ftp backup storage. This makes sense, as the backup is then stored independently from your system. Please fill in your credentials in the form that opens and enable passive mode and FTPS as shown in the image below:

After the remote backup storage got added, please select that you want to store the backups locally and on the remote FTP storage you just added. Also it makes sense to add an e-mail address where the server can inform you in case something goes wrong during your backup task. Please check your settings with the help of the image below and click on apply.

After the the first backup is done, you should see a list of the available backups listed by day and time in Tools & Settings > Tools & Resources > Backup Manager. To download or restore a backup, please klick on the required backup. In the section "Backup content", you can choose between restoring "Selected objects" and "All objects". In Selected Objects, you will have several options to only restore specific content like e-mail accounts from a selected domain. You have to move all units you want to restore from the left window to the right and confirm with "Restore".

11Aug/172

Overview of available RAID levels

With this tutorial we will explain certain types of RAID levels to you.
Some of you might have already experienced a loss of data, no matter if it was an SD card holding some vacation photos or a hard disk holding important files. Losing data can be very costly if you try to restore them by some specialist. An expert is needed and the procedure takes a lot of time, the easiest way to avoid those costs is simply to avoid any data loss in the first place.

This overview is not relevant for any VPS, your VPS systems are already running safe on a RAID system monitored by experienced technicians.

Creating backups is still very important, a RAID does not replace any backup!

You can find further instructions within the following tutorial: Data loss and how to avoid it

There are some points which you should think about first, there are several results depending on your requirements.

  1. How important is the performance?
  2. How much data security should be provided by the RAID?
  3. Are system resources available to manage the RAID, such as CPU and RAM

Depending on the results of the above questions and your budget, there are several options available:
A hardware RAID is always more expensive but provides the best performance and security (if combined with a battery backup unit).
A software RAID is the easiest way to go for a RAID, it is able to handle almost any type of RAID and can be set up within a few minutes.

An overview of available RAID levels is shown below:


RAID 0

The RAID 0 provides increased write and read performance, the data will be distributed to at least two disks. Since there is no redundancy all data will be lost in case one disk fails.

  • At least two hard disks are needed
  • No disk redundancy at all
  • Maximum (complete) storage capacity available
  • Improved read and write performance


RAID 1

The RAID 1 provides increased read performance (depending on the software/hardware controller used), all data will be mirrored to a second disk. There is also a RAID 1E available - in that case all data will be mirrored to additional disks too.

  • At least two hard disks are needed
  • n-1 disks can fail
  • 1/n of storage available (n = number of disks, with two disks = > 1/2 of total storage)
  • Improved read performance


RAID 5

The RAID 5 provides increased write and read performance, the data is written to at least two disks, an additional disk is always used for storing parity data. The parity data has to be calculated for every write - so for very write intensive applications the RAID 5 requires a lot of performance due to the necessary calculations.

  • At least three hard disks are needed
  • One disk can fail
  • n-1/n of storage available (n = number of disks, with three disks = > 2/3 of total storage)
  • Improved read and write performance
  • Requires a lot of CPU time


RAID 6

The RAID 6 provides increased read performance, the data is written to at least two disks, two additional disks are always used for storing parity data. The parity data has to be calculated for every write - so for very write intensive applications the RAID 6 requires a lot of performance due to the necessary calculations. As there are two parity bits saved on the disks, the needed CPU time is very high.

  • At least four hard disks are needed
  • Two disks can fail simultaneously
  • n-2/n of storage available (n = number of disks, with two disks = > 2/4 (half) of total storage)
  • Improved read performance
  • Requires the most CPU time


RAID 01

A RAID 01 is a combination of two or more volume groups. Each volume group is configured to have a RAID 0, those volume groups are mirrored in a RAID 1. With a total number of four disks one entire volume group can fail with both disks and no data will be lost.

  • At least four hard disks are needed
  • Two disks can fail simultaneously if they belong to the same logical volume group
  • Half of total storage capacity is available
  • Improved read and write performance


RAID 10

A RAID 10 is a combination of two or more volume groups. Each volume group is configured to have a RAID 1, those volume groups are striped in a RAID 0. With a total number of four disks, two disks can fail simultaneously and no data will be lost - the failed disks must not belong to the same volume group.

  • At least four hard disks are needed
  • Two disks can fail simultaneously if they do not belong to the same logical volume group
  • Half of total storage capacity is available
  • Improved read and write performance


 

The difference between RAID 01 and RAID 10 is only visible with six or more disks, if you have six disks a RAID 10 will provide a higher calculated security rate. We do recommend using a RAID 10 instead of using a RAID 01 even if you do only have four disks. Some RAID controllers do not even support a RAID 01 anymore. RAID 5 and RAID 6 require the highest CPU time since a checksum has to be calculated on every writing process to the disk. Only a few enterprise RAID controllers do support RAID 5 and RAID 6, due to the need of calculating checksums the writing speed might suffer which might then cause problems when using write intensive applications.

For our dedicated servers it is always possible to order additional hard disks or RAID controllers, current prices can be found on our web site. If you need a special configuration, please contact our support team any day between 8 am and 11 pm (German timezone, UTC+2).

Posted by: Gianni-Donato | Tagged as: , , , , , 2 Comments
21Dec/120

♡ ★ ♡ December 21th – 3 more days to go until Christmas ♡ ★ ♡

data securityChristmas is only a few days away and you still haven't got any ideas for gifts? Have a look on our Advent calendar and I'll promise you, you will find the right christmas present for your sweethearts.

Our today's offer was already to find behind the 10th door but due to big demand we offer it for one more time. It's Christmas and everything is allowed 🙂

 

For each Dedicated Server you order get 50 GB Backup space for free.

This backup solution will protect you against the risk of data loss.

10Dec/120

♡ ★ ♡ Day 10: Motto “Back it up” ♡ ★ ♡

Today our Advent promotion enters the next round. Thanks to the offer behind our 10th door data security has never been so easy:

For each Dedicated Server you order get 50 GB Backup space for free.

Only today take advantage of our specialized exklusive backup server with its expensive RAID 6 array to backup your files and databases.

With this upgrade free of charge you will receive an account which allows your server to access our backup server via FTP or FTPs (explicit) over the internatl network. Furthermore there is no limit for the size of individual files and the number of files. The traffic is internal and, of course, unlimited.

21Mar/120

New hardware RAID upgrades available!

To avoid boredom in the Giga-International department we revised our hardware RAID offers for you.

For those who do not know what it is exactly - here is the explanation:
RAID (redundant array of independent disks) is a storage technology that combines multiple disk drive components into a logical unit. Data is distributed across the drives in one of several ways called "RAID levels", depending on what level of redundancy and performance (via parallel communication) is required (source: Wikipedia).
The upgrade RAID 1 stands for “mirroring” because the contents are stored simultaneously on two hard disks.

In short, a RAID solution helps to create a higher Data security and to improve the performance.

When ordering a RAID 1 you have to select the extra upgrade that you can find in the category “Data security”.
The hardware RAID provides even more performance and stability than a software RAID; a high quality controller of 3Ware or Adaptec is used.

The upgrade is easily available when ordering a Giga Dedicated Server Quad and Core i7, because these two already provide 2 identical hard disks.
If you are ordering a sever which has only one hard disk or two hard disks which do not share the same capacity, you will need to order an additional hard disk with the same size as an upgrade.

The standard upgrade for RAID 1 is already available for 199,99 EUR; this is just a one-time setup fee, there is no monthly fee.
If you are interested in a higher RAID-level with more hard disks don’t hesitate to contact us - we fulfil any of your individual wishes.

•    RAID: Hardware-RAID 1 or 10 available for 199,99 EUR (one-time setup fee)
•    RAID: Hardware-RAID 5 or 6 available for 299,99 EUR; (BBU is available for an extra charge)

We are looking forward to your inquiry 🙂

Posted by: Katharina | Tagged as: , , No Comments