# System Requirements for UNIX Block-Level Backups

Verify that your environment meets the system requirements for block-level backup for UNIX.

## Operating System

Important

Use the most recent version of the operating system that is listed. The Commvault software fully supports the most recent version of an operating system, until the vendor ends support. More recent versions of the Commvault software might not install on operating systems that are not supported by the vendor anymore. For information about the support lifecycle of an operating system, contact the vendor.

### AIX

Operating system | Processor architecture
--- | ---
AIX 7.2 TL 01 SP01 ("7200-01-01-1642") 64-bit, or higher | PowerPC (including IBM System p)
AIX 7.1 TL 01 SP10 ("7100-01-10-1415") 64-bit, or higher | PowerPC (including IBM System p)

Note

4K disks are not supported for block level backups.

### Linux

Operating system | Processor architecture
--- | ---
AlmaLinux 9.3 with kernel 5.14.0-362.8.1.el9_3.x86_64 | x64
CentOS 8.4 with kernel 4.18.0-305 | x64 Compatible processors
CentOS 8.3 with kernel 4.18.0-240 | x86 x64 Compatible processors
CentOS 8.2 with kernel 4.18.0-193 | x64
CentOS 8.1 with kernel 4.18.0-147.0.3 | x64
CentOS 8.0 with kernel 4.18.0-80 | x64
CentOS 7.9 with kernel 3.10.0-1160 | x64
CentOS 7.8 with kernel 3.10.0-1127 | x64
CentOS 7.7 with kernel 3.10.0-1062 | x64
CentOS 7.6 with kernel 3.10.0-957 | x64
CentOS 7.5 with kernel 3.10.0-862 | x64
CentOS 7.3 with kernel 3.10.0-514 | x64
Debian 12.x with kernel 6.1.0-26-amd64 | x64 Compatible processors
Debian 11.x with kernel 5.10.0-24 | x86 x64 Compatible processors
Debian 10.x with kernel 4.19.0-25 | x64 Compatible processors
Debian 10.x with kernel 4.19.0-23 | x64 Compatible processors
Debian 10.x with kernel 4.19.0-9 | x86 x64 Compatible processors
Debian 10.x with kernel 4.19.0-8 | x86 x64 Compatible processors
Debian 10.x with kernel 4.19.0-6 | x86 x64 Compatible processors
Debian 9.x with kernel 4.9.0-15 | x86 x64 Compatible processors
Debian 9.x with kernel 4.9.0-14 | x86 x64 Compatible processors
Debian 9.x with kernel 4.9.0-13 | x86 x64 Compatible processors
Debian 9.x with kernel 4.9.0-6 | x86 x64 Compatible processors
Debian 8.x with kernel 3.16.0-5 | x86 x64 Compatible processors
Debian 8.x with kernel 3.16.0-4 | x86 x64 Compatible processors
Debian 7 with kernel 3.2.0-4-amd64 | x86 x64 Compatible processors
Oracle Linux 9.x with kernel 5.15.0-3.60.5.1 | x64
Oracle Linux 9.x with kernel 5.15.0.x | x64
Oracle Linux 8.7 with kernel 4.18.0-425.10.1 | x64
Oracle Linux 8.5 with kernel 5.4.17-2136.302.6.1.el8uek.x86_64 | x64
Oracle Linux 8.x with kernel 4.18.0.x | x64
Oracle Linux 7.x with kernel 3.8.13.x | x64
Oracle Linux 7.9 with kernel 5.4.17-2102.201.3.el7uek.x86_64 | x64
Oracle Linux 7.6 with kernel 4.14.35-1818.4.5.el7uek.x86_64 | x64
Oracle Linux 7.5 with kernel 4.1.12-124.14.2.el7uek.x86_64 | x64
Oracle Linux 7.4 with kernel 4.1.12-112.14.1.el7uek.x86_64 | x64
Oracle Linux 7.3 with kernel 4.1.12-61.1.18.el7uek.x86_64 | x64
Oracle Linux 7.2 with kernel 3.8.13-98.7.1.el7uek.x86_64 | x64
Oracle Linux 7.1 with kernel 3.8.13-55.1.6.el7uek.x86_64 | x64
Oracle Linux 6.10 with kernel 4.1.12 | x64
Oracle Linux 6.9 with kernel 4.1.12-61.1.28.el6uek.x86_64 | x86 x64 Compatible processors
Oracle Linux 6.8 with kernel 4.1.12-37.3.1.el6uek.x86_64 | x86 x64 Compatible processors
Oracle Linux 6.7 with kernel 3.8.13-68.3.4.el6uek.x86_64 | x86 x64 Compatible processors
Oracle Linux 6.6 with kernel 3.8.13-68.1.3.el6uek.x86_64 | x86 x64 Compatible processors
Oracle Linux 6.4 with kernel 2.6.39-400 | x86 x64 Compatible processors
Red Hat Enterprise Linux 10 with kernel 6.12.0-55.9.1.el10_0.x86_64 | x64
Red Hat Enterprise Linux 9.8 with kernel 5.14.0-687.5.3.el9_8.x86_64 | x64 Compatible processors
Red Hat Enterprise Linux 9.7 with kernel 5.14.0-611 | x64 Compatible processors
Red Hat Enterprise Linux 9.4 with kernel 5.14.0-427 | x64 Compatible processors
RedHat Enterprise Linux 9.3 with kernel 5.14.0-362 | x64 Compatible processors
RedHat Enterprise Linux 9.2 with kernel 5.14.0-284 | x64 Compatible processors
RedHat Enterprise Linux 9.0 with kernel 5.14.0-70 | x64 Compatible processors
Red Hat Enterprise Linux 8.10 with kernel 4.18.0-553 | x86 x64 Compatible processors
RedHat Enterprise Linux 8.8 with kernel 4.18.0-477 | x64 Compatible processors
RedHat Enterprise Linux 8.7 with kernel 4.18.0-425 | x64 Compatible processors
RedHat Enterprise Linux 8.6 with kernel 4.18.0-372 | x64 Compatible processors
RedHat Enterprise Linux 8.5 kernel 4.18.0-348.2.1 | x64 Compatible processors
RedHat Enterprise Linux 8.4 with kernel 4.18.0-305 | x64 Compatible processors
RedHat Enterprise Linux 8.3 with kernel 4.18.0-240 | x86 x64 Compatible processors
Red Hat Enterprise Linux 8.2 Advanced Platform with kernel 4.18.0-193 | x64
Red Hat Enterprise Linux 8.1 Advanced Platform with kernel 4.18.0-147.0.3 | x64
Red Hat Enterprise Linux 8.0 Advanced Platform with kernel 4.18.0-80 | x64
Red Hat Enterprise Linux 7.9 Advanced Platform with kernel 3.10.0-1160 | x64
Red Hat Enterprise Linux 7.8 Advanced Platform with kernel 3.10.0-1127 | x64
Red Hat Enterprise Linux 7.7 Advanced Platform with kernel 3.10.0-1062 | x64
Red Hat Enterprise Linux 7.6 Advanced Platform with kernel 3.10.0-957 | x64
Red Hat Enterprise Linux 7.5 Advanced Platform with kernel 3.10.0-862 | x64
Red Hat Enterprise Linux 7.4 Advanced Platform with kernel 3.10.0-693 | x64
Red Hat Enterprise Linux 7.3 Advanced Platform with kernel 3.10.0-514.10.2.el7 | x64
Red Hat Enterprise Linux 7.1 Advanced Platform with kernel 3.10.0-229 | x64
SUSE Linux Enterprise Server 15 SP4 with kernel 5.14.21-default | x64 Compatible processors
SUSE Linux Enterprise Server 15 SP2 with kernel 5.3.18-24.12-default | x64 Compatible processors
SUSE Linux Enterprise Server 15 SP1 with kernel 4.12.14-197.51-default | x64 Compatible processors
SuSE Linux 15 Enterprise Server with kernel 4.12.14-25.22 | x86 x64 Compatible processors
SuSE Linux 12 SP5 Enterprise Server with kernel 4.12.14-120 and later | x64
SuSE Linux 12 SP4 Enterprise Server with kernel 4.12.14-95.60 and later | x64
SuSE Linux 12 SP3 Enterprise Server with kernel 4.4.82-6.9 | x86 x64 Compatible processors
SuSE Linux 12 SP2 Enterprise Server with kernel 4.4.121-92.92 | x86 x64 Compatible processors
SuSE Linux 12 SP2 Enterprise Server with kernel 4.4.38-93 | x86 x64 Compatible processors
SuSE Linux 12 Enterprise Server with kernel 3.12.49-11-default (Update 1) | x86 x64 Compatible processors
SuSE Linux 11 SP4 Enterprise Server with kernel 3.0.101-63 | x86 x64 Compatible processors
SuSE Linux 11 SP2 Enterprise Server with kernel 3.0.13-0.27-default | x86 x64 Compatible processors
SuSE Linux 11 Enterprise Server with kernel 2.6.32.12-0.7-default | x86 x64 Compatible processors
SuSE Linux 10 Enterprise Server with kernel 2.6.16.60-0.54.5 (Update 3) | x86 x64 Compatible processors
SuSE Linux 10 Enterprise Server with kernel 2.6.16.60-0.21 (Update 2) | x86 x64 Compatible processors
SuSE Linux 10 Enterprise Server with kernel 2.6.16.46-0.12 (Update 1) | x86 x64 Compatible processors
Rocky Linux 8.6 with kernel 4.18.0-477 | x64 Compatible processors
Rocky Linux 8.7 with kernel 4.18.0-477 | x64 Compatible processors
Rocky Linux 8.8 with kernel 4.18.0-477 | x64 Compatible processors
Rocky Linux 8.10 with kernel 4.18.0-553 | x64 Compatible processors

### Solaris

Operating system | Processor architecture
--- | ---
Solaris 11.3 | x64 Sparc T/M series
Solaris 11.2 | x64 Sparc T/M series
Solaris 11.0 | x64 Sparc T/M series
Solaris 10 Update 7 or higher | x64 Sparc T/M series

## File Systems

All the blocks in a raw or block device are backed up during block-level backups. For supported file systems, only the blocks that contain data are backed up.

Note

Block-level backups are not supported for NFS volumes.

The following table lists the file systems supported for each supported operating system:

File system | Operating system | Support for Change Block Tracking Using CVBF (Block Filter Driver) | Data blocks backup support
--- | --- | --- | ---
Extended 3 File System (ext3) | Linux | Yes | Yes
Extended 4 File System (ext4) | Linux | Yes | Yes
'X' File System (XFS) | Linux | Yes | Yes
Virtual FAT (vfat) | Linux | Yes | No
Journal File System (JFS2) | AIX | Yes | Yes
UNIX File System (UFS)* | Solaris | Yes | No
Veritas File System (VxFS) | Solaris, AIX | Yes | Yes
Zettabyte File System (ZFS)* | Solaris | Yes | No

Note

- Live browse and file-level restores are not supported for raw devices.

- ZFS must span the entire disk. Disk slices are not supported.

- For the Solaris File System Agent, the CVBF cache must be a UFS file system. For example, /opt/commvault/CVBF/cache.

## Volume Managers

- AIX LVM

- Linux LVM

- VxVM

## Space Requirements in the LVM Group

- For Linux LVM snaps, the LVM volume group must have enough space for snapshot creation. The default COW cache size is set to 4096 MB or 5% of the volume size, whichever is greater. To increase the COW cache size, configure the nSnapCowSizeMB additional setting.

- For CVBF snaps, the COW files are created in the software_install_path/CVBF/cache directory by default. Over time, the COW files can grow significantly and fill up the volume. To move the COW files to another volume, configure the sCVBFSNAPPART additional setting.

## Device

- VirtIO

## Clustering

If clustering is supported by the operating system, you can install the software on a cluster. For information about supported cluster types, see Support for Cluster Configuration.

## Hard Drive

Component | Space required
--- | ---
Software | 1 GB
Job results folder | To calculate the disk space requirements for the job results directory, see Job Results Directory Disk Space Calculation. Some agents and components require additional disk space, see Agents and Components Requiring Additional Disk Space.
Log folder | 500 MB

## Location of the Default Temporary Directory for the Commvault Software

For Unix clients, the default temporary directory location /opt/commvault/Base/Temp for the Commvault software must be under the same mount point as the Job Results folder. You can set the default temporary directory for the software by configuring the dGALAXYTEMPDIR registry key on the client computer.

## DISCLAIMER

Certain third-party software and service releases (together, "Releases") may not be supported by Commvault. You are solely responsible for ensuring Commvault’s products and services are compatible with any such Releases.

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