Source:SEP sesam Requirements
For smooth installation of SEP sesam backup software in the network, name resolution must work properly. Specify a fully qualified name for each SEP sesam component, e.g., every server and client in network.
When finding a client, the operating system (Windows or Linux) first checks the hosts file for name resolution. Next, the configured DNS server is checked. If the DNS server is misconfigured or missing, the hosts file must be set up correctly to provide DNS. You have to enter the names and addresses of all SEP sesam components: SEP sesam Server, backup clients and machines running the graphical user interface (GUI). You must not remove or modify any existing entry of localhost in your hosts file. For details, see How to check DNS configuration.
A DNS server is preferred over entries in the hosts files of all devices. A DNS server allows a system-wide solution. All SEP sesam components must have their names and IP addresses (reverse lookup) added to the DNS server.
- On 64-bit Linux, FreeBSD and Solaris PostgresSQL is used as the SEP sesam database.
- When SEP sesam is installed on MS Windows, the SQLite database was automatically installed up to version 4.4.3 Beefalo V2. As of version 5.0.0 Jaglion, you can choose to install a PostgreSQL database that is included in the SEP sesam installer (or use the SQLite database that does not require a server to be set up and is used with SEP sesam by default). For details, see Installation on Microsoft Windows.
- When SEP sesam is installed on a 64-bit Unix operating system, PostgresSQL has to be installed before the SEP sesam Server to enable the DB instance to be set up for use.
On MS Windows, .Net Framework 4 is required for SEP sesam Server installation.
Deactivate or remove the antivirus software before installing SEP sesam components on each computer. Failure to disable active antivirus software may result in a failed, corrupt or incomplete installation. If antivirus software is installed, it is strongly recommended to turn off any on-demand scanning while a backup is running. For more details, see What effect does an antivirus scanner have on SEP sesam.
Si3 Deduplication Hardware Requirements
- For the minimum Si3 hardware requirements that apply to the SEP sesam Si3 deduplication server, see the above requirements list. Keep in mind that these requirements represent the demand for deduplication only. In addition, the amount of memory for the operating system and other services should be taken into account.
- For details on the required Java version, see Java Compatibility Matrix. Si3/Si3-NG is not mandatory, so there is no dependency rule for it in the RPM/DEB packages.
- When estimating the maximum size of a deduplication store, you have to ensure that there is enough space available for dedup trash, otherwise the deduplication store will run out of space. You should calculate the required disk space based on a representative sample of your full backup and add the additional storage space equal to approximately 50% of the representative full backup.
Disk attachment and protocols
Si3/Si3-NG supports all types of direct-attached disk storage, such as serial attached SCSI (SAS), Serial ATA (SATA), and Fibre Channel (FC)/LUN.
Applies to Windows only: SEP AG recommends using the High performance power plan to increase the performance of your backup. Note that Windows sets all computers to the Balanced power plan by default and you must manually switch to the High Performance power plan. This way, your Windows computer will use more power, but the systems with Si3 will always operate at the highest performance level.
- From the Start menu, go to Control Panel -> System and Security -> Power Options and change the setting to High performance.
- Si3 NG deduplication store is not supported for NSS and MooseFS volumes.
- To avoid problems resulting from the combination of excessively large Si3 deduplication stores and inefficient hardware, the maximum initial Si3/Si3-NG deduplication store size is limited to 40 TB. If you would need to increase this limit, contact SEP support. This limitation applies to the creation of a new Si3/Si3-NG deduplication store in the GUI.
|It is recommended to run Si3 deduplication (SEP sesam Server or RDS) on the physical host. It is also possible to run it on a virtual machine. In this case, take into account that deduplication consumes a lot of server resources for reading, processing and writing the deduplicated data, as well as for some other deduplication tasks such as housekeeping and various checks. These tasks require a large amount of IO and a large amount of memory. Si3 performance can be affected by other virtual machines running on the same host. Therefore, if you are running Si3 on a VM, you should be aware of possible bottlenecks and shortcomings.|
Required additional amount of RAM and CPU cores
Memory requirements are dependent on the number of concurrent streams and expected workload. The following tables show the recommended minimum additional amount of RAM and CPU cores for a Si3/Si3-NG data store to ensure good performance. The TB value corresponds to the capacity of the Si3/Si3-NG data store.
|These requirements relate solely to the need for deduplication. In addition, you should consider the amount of memory for the operating system and other services.|
|Si3/Si3-NG data store capacity (check initial size limit)||RAM|
|<20 TB||at least 16 GiB|
|20-40 TB||at least 32 GiB|
The following table shows the number of CPU cores required for a Si3/Si3-NG data store. The TB value is the amount of data backed up (before deduplication)!
|Backed up data (before dedup)||CPU cores Note|
This is the minimum amount to ensure good performance. Depending on the number of concurrent streams, more cores may be needed.
Java Compatibility Matrix
|Java version||SEP sesam version|
|Java 17||on demand Note1|
|OpenJDK 11 LTS||4.4.3 Beefalo, 5.0.0 Jaglion, 22.214.171.124 Jaglion V2 Note2|
|Java 11||4.4.3 Beefalo, 5.0.0 Jaglion, 126.96.36.199 Jaglion V2 Note2|
Java 10 is not supported!
Java 9 is not supported!
|Java 8 ≥ patch level 111 (both Windows and Linux)||4.4.3 Grolar; 4.4.3 Beefalo, 5.0.0 Jaglion, 188.8.131.52 Jaglion V2 Note2|
|Java 8 (at least patch level 111) ≥ JRE 1.8.0_111 (required for Linux)||v. ≥ 4.4.3 Tigon V2|
|Java 8 (required for Windows)||v. ≥ 4.4.3|
|Java 7 (all OS except Windows)||4.4.3 Note3|
|Java 6||4.2.1 & 4.2.2|
- SEP sesam 184.108.40.206 Jaglion V2, including SP1, supports Java 17 only on demand, if the use of Java 17 from the command line has been enabled with
sm_setup set_java_path -f <java_17_installation_path>
- Java 1.8 (≥ 1.8.0_111) is only accepted if it is already installed and the computer does not have a 4K display.
- 220.127.116.11 Jaglion V2 is the last version of SEP sesam that supports Java 1.8.
SEP sesam versions 4.4.3 until 4.4.3 Tigon V1 running on non-Windows platform require Java 7, however, SEP sesam uses JavaFX for its web dashboard and user-defined schedules features. If you want to have all the 4.4.3 features available, you need OpenJFX package or Oracle®'s Java 8 (already includes JavaFX) on your SEP sesam GUI client.