System requirements and compatibility matrix

Modified on Tue, 29 Jul at 12:24 PM

This article contains everything you need to know about which operating system versions we support and do not support, as well as the system requirements for using our software.

Note: Support cannot be assured for any operating system not listed in the matrix below.

Page contents

Supported operating systems and requirements
Out-of-support operating systems
Out-of-support Redstor versions

Supported operating systems and requirements

Use the categories below to check the requirements for the functionality you need.

ESE
Storage Platform
Console
InstantData
FSR
FSR to Azure
Bare Metal Recovery
Legacy

Enterprise Server Edition (ESE)
Operating system	Windows	Windows 10 - 32- & 64-bit
		Windows 11
		Windows Server 2016
		Windows Server 2019
		Windows Server 2022 (Standard)
		Windows Server 2022 with SQL Server 2019
		Windows Server 2022 with SQL Server 2022
	Mac	macOS 10.15 Catalina
		macOS 11 Big Sur
	Linux	Ubuntu 16.04 LTS - 32- & 64-bit
		Ubuntu 18.04 LTS - 64-bit
		Ubuntu 20.04 LTS - 64-bit
		Ubuntu 22.04 - 64-bit
		Ubuntu 24.04 - 64-bit
		Red Hat Enterprise Linux 7.3 - 64-bit
		Red Hat Enterprise Linux 8 - 64-bit
		Red Hat Enterprise Linux 9 - 64-bit
		CentOS 7 - 32- & 64-bit
		CentOS 8 - 64-bit
		SUSE 12 & SUSE 15
		openSUSE Leap 15.2
Database		No database required
Processor	Windows	Minimum: 1.4 GHz (x86 or x64) Recommended:2 GHz or faster (with AES-NI support for optimal performance)
	Mac	Not applicable
	Linux	Minimum: 1.4 GHz (x64) Recommended:2 GHz or faster (with AES-NI support for optimal performance)
Memory		Required (in addition to OS requirements): Agent service: 512 MB Agent GUI: 1 GB
Hard disk space and configuration		Required: 150 MB per 1 million files per backup Recommended: 300 MB per 1 million files per backup. The amount of backup information kept on the Agent depends on the roll-up schedule configured on the Storage Platform. Note: We recommend disabling Windows' volume-level deduplication and compression. NTFS and Fat32 are both supported.
Other	Application integration	Windows Image Backup: Windows Server Backup (WSB) same as OS version System state backup and restore: Volume Shadow Copy Service (VSS) same as OS version MS SQL (through VSS): 2014 (Express) 2016 (Express) Exchange (through VSS): 2010 2013 2016 Hyper-V Backup and restore on Windows 2016 and later (support for Windows 2012 R2 not assured) Education Software Solutions (ESS) - formerly Capita SIMS, FMS, Discover
	Full System Backup	Windows operating systems supported by ESE Ubuntu 16.04, 18.04, 20.04 Red Hat Enterprise Linux 7, 8 CentOS 7, 8 SUSE Enterprise Linux 12, 15
	Account edition	Only Accounts created by an ESE Agent, or SE Accounts converted to ESE
	Runtime	Java 17 (distributed with the Agent)
Storage Platform
Operating system	Windows	Windows Server 2016
		Windows Server 2019
		Windows Server 2022
	Mac	Not supported
	Linux	Not supported
Database		MS SQL 2016 or later
Processor	Windows	Minimum: 1.4 GHz (x64) Recommended:2 GHz or faster
	Mac	Not applicable
	Linux	Not applicable
Memory		AccountServer: Minimum 4 GB (over and above OS and SQL requirements) StorageServer: Minimum 4 GB (over and above OS requirements) Recommended: Minimum 1 GB per 1 million files (over and above OS requirements)
Hard disk space and configuration		Required (StorageServer): - Thick provisioning Recommended (StorageServer): - RAID 5 or RAID 6 and HDD specifications depending on the speed required for backup and restore operations (faster disk will contribute to better performance) - 7200RPM SATA as a minimum - Minimum of 10 GB of available disk space for the installation volumes (more required if non-default log and reporting retention is used) - Volumes to a maximum of 120 TB, depending on the data type and user distribution on the server - No more than 2000 backup accounts per StorageServer volume - NTFS should use allocation unit size (cluster size) of 64K or greater Note: - ReFS is not supported - SMR (shingled magnetic recording) drives are not recommended due to poor write performance - Consumer NAS iSCSI is not recommended as the write latency and reliability may not be suitable for the volumes handled by StorageServers - We recommend disabling Windows' volume-level deduplication and compression
Other	Application integration	Not applicable
	Account edition	ESE Accounts from v8 Legacy Accounts from v18 (DL and SE)
	Runtime	.NET Framework 4.7.2 or later - 64-bit
	Network	A network interface card or a virtual network adapter with a fixed IP address, host name or DNS name is preferred for flexibility. The AccountServer and Slave AccountServer require outgoing Internet access to licence.redstor.com:443. It is advised that you consult with us directly when planning new hardware for a Storage Platform installation. Also required: Valid NTP time source access and SMTP email requirements for system alerts and reporting.
Console
Operating system	Windows	Windows 10 - 64-bit
		Windows 11
	Mac	Not supported
	Linux	Not supported
Database		Not supported
Processor	Windows	Minimum OS requirements
	Mac	Not applicable
	Linux	Not applicable
Memory		1 GB
Hard disk space and configuration		100 MB
Other	Application integration	Not applicable
	Account edition	Not applicable
	Runtime	.NET Framework 4.8.1 or later
	Network	Not applicable
InstantData Permanent & InstantData Temporary
		As source	As target
Operating system	Windows	Windows 10: 64-bit	Windows 10: 64-bit
		Windows Server 2016 Standard	Windows Server 2016 Standard
		Windows Server 2019 Standard	Windows Server 2019 Standard
		Windows Server 2022 Standard	Windows Server 2022 Standard
	Mac	Not supported	Not supported
	Linux	Ubuntu 16.04 LTS: 64-bit	Not supported
		Ubuntu 18.04 LTS (64-bit)
		Red Hat Enterprise Linux 6
		Red Hat Enterprise Linux 7.3: 64-bit
		CentOS 6 (32- & 64-bit)
		CentOS 7: 64-bit
Processor	Windows	Minimum OS requirements	Minimum OS requirements
	Mac	Not applicable	Not applicable
	Linux	Not applicable	Not applicable
Memory		Dependent on virtual machine	Dependent on virtual machine
Hard disk space and configuration		Dependent on virtual machine	Dependent on virtual machine
Other	Application integration	Not applicable	Not applicable
	Account edition	Not applicable	Not applicable
	Runtime	Not applicable	.NET Framework 4.6.2 or later
	Network	Not applicable	Not applicable
Full System Recovery (FSR)
		Physical-to-virtual recovery	Virtual-to-virtual recovery
Virtual machine version	Windows	VMware vSphere or Workstation	VMware vSphere or Workstation
		Direct restore to ESXi 5 with ESXi Standard, Enterprise or Enterprise Plus (vCenter server required)	Direct restore to ESXi 5 with ESXi Standard, Enterprise or Enterprise Plus (vCenter server required)
		Direct restore to ESXi 6 with ESXi Standard, Enterprise or Enterprise Plus (vCenter server required)	Direct restore to ESXi 6 with ESXi Standard, Enterprise or Enterprise Plus (vCenter server required)
		Local file restore and upload to ESXi5 for VMFS5 and NFS Datastore for vSphere Hypervisor (free licence), ESXi Standard, Enterprise or Enterprise Plus (vCenter server not required)	Local file restore and upload to ESXi5 for VMFS5 and NFS Datastore for vSphere Hypervisor (free licence), ESXi Standard, Enterprise or Enterprise Plus (vCenter server not required)
		Local file restore and upload to ESXi6 for VMFS5 and NFS Datastore for vSphere Hypervisor (free licence), ESXi Standard, Enterprise or Enterprise Plus (with or without vCenter server)	Local file restore and upload to ESXi6 for VMFS5 and NFS Datastore for vSphere Hypervisor (free licence), ESXi Standard, Enterprise or Enterprise Plus (with or without vCenter server)
		Restore to Hyper-V on Windows Server 2016 and later (support for Windows 2012 R2 not assured)	Restore to Hyper-V on Windows Server 2016 and later (support for Windows 2012 R2 not assured)
	Mac	Not supported	Not supported
	Linux	Not supported	Not supported
Processor	Windows	Minimum OS requirements	Minimum OS requirements
	Mac	Not applicable	Not applicable
	Linux	Not applicable	Not applicable
Memory		Dependent on virtual machine	Dependent on virtual machine
Hard disk space and configuration		Dependent on virtual machine EFI system is supported	Dependent on virtual machine EFI system is supported
Other	Application integration	Not applicable	Not applicable
	Account edition	Not applicable	Not applicable
	Runtime	Not applicable	.NET Framework 4.6.2 or later
	Network	Not applicable	Not applicable
	Downloads	FSR to VMware requires this VDDK to be downloaded. A network connection to the address where it is hosted must therefore be allowed.	FSR to VMware requires this VDDK to be downloaded. A network connection to the address where it is hosted must therefore be allowed.
Full System Recovery to Azure
Operating system	Windows	Windows 10 - 32- & 64-bit
		Windows Server 2016 Standard
		Windows Server 2019 Standard
		Windows Server 2022 Standard
	Linux	Red Hat Enterprise Linux 7.2 to 8.2 (64-bit)
		CentOS 7.4 to 8.2 (64-bit)
		Ubuntu 16.04, 18.04, 20.04
		SUSE 12, 15
		openSUSE Leap 15.2
Filesystem		Backup	FSR
		ext2, ext3, ext4, xfs, btrfs, vfat, fat, msdos	ext2, ext3, ext4, xfs, vfat, fat
Bare Metal Recovery
Partition types	BIOS partitions	Primary and logical partitions
		NTFS
		FAT32
		EFI system partition
		Windows Recovery Environment
		Extended partitions
		Dynamic disks (Windows Logical Disk Manager) - will be converted into basic disks

	GPT partitions	Windows basic data partition
		NTFS
		FAT16/FAT32
		ReFS - will be converted to NTFS
		EFI system partition
		Dynamic disks (Windows Logical Disk Manager) - will be converted into basic disks
Legacy
		Desktop & Laptop Edition (DL)	Server Edition (SE)
Operating system	Windows	Windows 10 - 64-bit	Windows 10 - 64-bit
	Mac	Mac OS X 10.13 (High Sierra) - 64-bit only Mac OS X 10.12 (Sierra) - 64-bit only Mac OS X 10.11 (El Capitan) - 64-bit only Mac OS X 10.10 (Yosemite) - 64-bit only Mac OS X 10.9 (Mavericks) - 64-bit only Mac OS X 10.8 (Mountain Lion) - 64-bit only	Mac OS X 10.13 (High Sierra) - 64-bit only Mac OS X 10.12 (Sierra) - 64-bit only Mac OS X 10.11 (El Capitan) - 64-bit only Mac OS X 10.10 (Yosemite) - 64-bit only Mac OS X 10.9 (Mavericks) - 64-bit only Mac OS X 10.8 (Mountain Lion) - 64-bit only
	Linux & Unix	Not supported	Fedora v.18 to 21 (most Linux OSs supporting RPM installers) - 32- & 64-bit Ubuntu v.14.04.2 LTS - 32- & 64-bit (via a Debian installer) Solaris SPARC 10 (5.10) - 32- & 64-bit (only supported up to backup client v6.2)
Processor	Windows	Minimum: 1 GHz (x86) or 1.4 GHz (x64) Recommended: 2 GHz or faster	Minimum: 1 GHz (x86) or 1.4 GHz (x64) Recommended: 2 GHz or faster
	Mac	Intel Core processor (PowerPC not supported)	Required: Intel Core processor Recommended: Intel Core Duo or later (PowerPC not supported)
	Linux	Not applicable	Minimum: 1 GHz (x86) or 1.4 GHz (x64) Recommended: 2 GHz or faster
Memory		Required:1 GB Recommended:2 GB (above OS requirements)	Required:1 GB Recommended:2 GB (above OS and application requirements) Optimal: 3GB per 1 million files in the backup selection
Hard disk space and configuration		Required: 150 MB plus space for local cache Recommended: Amount of free space equal to the backup account limit. Cache: The local cache can be as large as the total size of all files selected for backup; a file selection of 100 MB needs up to 100 MB extra disk space for the cache (not required when streaming is enabled).	Required: 150 MB plus space for local cache Recommended: Amount of free space equal to the backup account limit Cache: The local cache can be as large as thetotal size of all files selected for backup. A file selection of 10 GB needs up to 10 GB free space for the cache (not required when streaming is enabled). Database backup: Space is needed for the data dump and cache. The dump can be as large as the database. The cache is the compressed version of the database. For example: 1:2 compression ratio on a 10 GB database requires 15 GB of free space (10 GB for the dump and 5 GB for the cache). Temporary working space is also required for subsequent backups. The requirement will be less than 5 GB in this example.
Other	Application integration	Not applicable	Windows plug-ins: VSS: - Exchange: 2007 / 2010 / 2003 / 2013 - SQL: 2014 / 2012 MS SQL Server: 2014, 2012 System State (Windows): - 2003 Server Mac, Linux & Windows plug-ins: Email Notification Script
	Runtime	Java JRE 1.8.0 (distributed with the backup client)	Java JRE 1.8.0 (distributed with the backup client)

Out-of-support operating systems

ESE has in the past been supported on the operating systems listed below that are now no longer actively supported by the OS vendor. The compatibility of previous ESE releases was verified on these OSs, but the latest ESE versions are no longer being verified. Support for ESE on these OSs is best effort, relating to known issues; any issues relating to the operating system cannot be supported, as the operating system is not supported.

Windows 7 (end of mainstream support: 13 January 2015)
Windows 8.1 (end of mainstream support: 9 January 2018)
Windows Server 2008 R2 (end of mainstream support: 13 January 2015)
Windows Server 2012 and R2 (end of mainstream support: 9 October 2018)

Support for these operating systems may be explicitly withdrawn in future, and any known limitations or maximum compatibility versions will be listed here.

Also note:

ESE is non-functional on Windows Server 2008 (including variants such as SBS)/Windows Vista and older.
InstantData Permanent is non-functional on Windows Server 2008 R2/Windows 7 and older.

Using out-of-support operating systems is not recommended. Your best option to protect your data with ESE is to use an operating system that is in active support by the vendor.

Out-of-support Redstor versions

Support cannot be assured for legacy clients (SE/DL). These clients can be used on legacy operating systems, but they are no longer being supported for security patches.
Redstor software older than v16 has not been supported since 1 March 2018.
Support for v5 and earlier of the Attix5 Pro Backup Client ended on 31 March 2013. End-of-life was reached with version 17.2 (February 2017). All end-of-life Backup Clients are blocked in v17.2 and later.
Support for v6.2.4 ended on 1 June 2013.