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SME Server:Documentation:Administration Manual:Chapter5 (view source)

Revision as of 00:40, 31 March 2021

1,520 bytes removed ,  00:40, 31 March 2021
→‎Installing And Configuring Your SME Server Software
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The following sections explain in detail the process of installing the SME Server software.
 
The following sections explain in detail the process of installing the SME Server software.
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{{Note box|If you have previously installed and configured a server and are reinstalling the software, please be aware that you should use the procedure described in section 5.3. Upgrading From A Previous Version in order to preserve your existing configuration and data. Simply performing a new installation will erase all previously existing user accounts, user directories, i-bay contents and web site and configuration parameters. If you have not already done so, you may wish to back up the contents of your server onto one of your desktop computers. You can do so easily by selecting "Backup or restore" from the server manager, as explained in chapter 10.1.||
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{{Note box|If you have previously installed and configured a server and are reinstalling the software, please be aware that you should use the procedure described in section 1.5.3. Upgrading From A Previous Version in order to preserve your existing configuration and data. Simply performing a new installation will erase all previously existing user accounts, user directories, i-bay contents and web site and configuration parameters. If you have not already done so, you may wish to back up the contents of your server onto one of your desktop computers. You can do so easily by selecting "Backup or restore" from the server manager, as explained in chapter 10.1.||
 
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====RAID1 Support (Disk Mirroring)====
 
====RAID1 Support (Disk Mirroring)====
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With SME Server, you have the ability to set up disk mirroring, also called RAID Level 1. In disk mirroring, you basically write all of your data to two separate hard disks installed in your server. One is the mirror of the other. Should the primary disk experience a hardware failure, the mirror disk will continue operations as if nothing had happened. All of your data will be protected.
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With SME Server, you have the ability to set up disk mirroring, also called RAID Level 1. In disk mirroring, you basically write all of your data to two separate hard disks installed in your server. One is the mirror of the other. Should the primary disk experience a hardware failure, the mirror disk will continue operations as if nothing had happened. All of your data will be protected from the single disk failure. This does NOT replace the need for backups!
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Disk mirroring can be accomplished through either software or hardware .
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Disk mirroring can be accomplished through either software or hardware.
    
=====Software Mirroring=====
 
=====Software Mirroring=====
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The SME Server comes by default with RAID disk mirroring. The level of Raid depends on the number of drives installed.  The server is configured to accept any number of drives and will function properly. You can verify the RAID status from the console. If you later wish to add more drives, just add them and instruct the server via the console to create the mirror.  It will take some time to build so do it during scheduled maintenance. They can be either SCSI or IDE drives, but we strongly advise they are the same size and type.  
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The SME Server comes by default with RAID disk mirroring. The level of Raid depends on the number of drives installed.  The server is configured to accept any number of drives and will function properly. You can verify the RAID status from the console. If you later wish to add more drives, just add them and instruct the server via the console to create the mirror.  It will take some time to build so do it during scheduled maintenance. They can be either SCSI or SATA or even IDE drives, but we strongly advise they are the same size and type.  
    
There is more technical information on SME Raid at http://wiki.contribs.org/Raid
 
There is more technical information on SME Raid at http://wiki.contribs.org/Raid
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=====Hardware Mirroring=====
 
=====Hardware Mirroring=====
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With hardware mirroring, you use a special RAID disk controller to perform the actual mirroring across multiple disks. As mirroring is performed in hardware, the performance can be significantly faster than software mirroring. Additionally it can simplify configuration because to the operating system the entire RAID disk system looks like one single disk. You should be able to use any supported SCSI hardware RAID controller.
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With hardware mirroring, you use a special RAID disk controller to perform the actual mirroring across multiple disks. As mirroring is performed in hardware, the performance may be faster than software mirroring. Additionally it can simplify configuration because to the operating system the entire RAID disk system looks like one single disk. You should be able to use any supported SATA or SCSI hardware RAID controller.
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If you are going to use hardware mirroring, you should NOT choose Install - Dual hard disk with software RAID-1 mirroring during the installation process described in section 5.4. Installing the Software. (Doing so will enable software mirroring.) Instead, you should do a regular installation of the software. See [[Booting]]
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If you are going to use hardware mirroring, you should NOT choose Install - Dual hard disk with software RAID-1 mirroring during the installation process described in section 1.5.4. Installing the Software. (Doing so will enable software mirroring.) Instead, you should do a regular installation of the software. See [[Booting]]
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{{Note box|Using one of the supported hardware RAID controllers, you will be able to upgrade from an earlier version of the SME Server to version 6.x using the standard upgrade process detailed in section 5.3. Upgrading From A Previous Version. You should back up all your data and test carefully after installation.}}
      
====Upgrading From A Previous Version====
 
====Upgrading From A Previous Version====
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=====Upgrade from 8.x to 9.x=====
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{{Note box|msg=In-place upgrades to SME 9.x using yum or CD are not supported due to design constraints imposed by CentOS.
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It is necessary to backup the old server & then restore to the new server. Contribs will need to be reinstalled.}}
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The simplest way to do this is via a Console Backup to attached USB disk on the old server. Alternatively use one of the Backup & Restore options available in server manager panel, ie backup to desktop, or backup to workstation (either to attached USB or network share). Other non standard options exist to Backup virtual servers that do not have USB ports etc, & Restore to similar virtual systems, eg using ssh.
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{{Tip box|msg=The Restore from USB on first boot function (on a newly installed SME 9 server), will only utilise backups that are saved as smeserver.tgz files, which are the Console backup to USB or the server manager backup to Desktop. The server manager backup to Workstation (either to USB or network share) creates a "backupdate.dar" type filename (or multiple split parts) & cannot be used to restore using the Restore on first boot function, it can only be used for restores from server manager. The new install must have its backup to workstation configured as per the old install.}}
      
=====Upgrade from 9.x to 10.x=====
 
=====Upgrade from 9.x to 10.x=====
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