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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.
| 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):
| ||
| Hard disk space and configuration | Required: 150 MB per 1 million files per backup NTFS and Fat32 are both supported. | ||
| Other | Application integration | Windows Image Backup: System state backup and restore: MS SQL (through VSS):
Exchange (through VSS):
Hyper-V Education Software Solutions (ESS) - formerly Capita | |
| Full System Backup |
| ||
| 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):
| ||
| 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.
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