Storage Requirements

This article describes general requirements and recommendations regarding storage in Exasol.

Supported storage types/technologies

  • Sparse file devices hosted on a filesystem like ext4 or XFS (NFS is not supported)
  • Block devices (local storage SAS, SSD, NVMe, virtual disks, or remote storage iSCSI/SAN)
  • LVM2
  • LUKS

Additional storage requirements

  • Use at least 4 storage drives with minimum 250 MBps read/write capacity per drive.

  • OS and storage disks should have RAID 1 or similar fault tolerance.

  • OS disks must have at least 150 GiB free disk space after installation.

  • For swap partitions, use the size recommended by the OS vendor.

Block storage devices must have persistent names. We strongly recommend that you use logical volume management with LVM2 to ensure that the block device names are persistent.

Disk labels such as /dev/nvme1n1 are not persistent and must not be used. If you choose not to use LVM, the disk path must be explicitly specified from /dev/disk/by-id.

To learn how to calculate the required size for storage devices, see Sizing Guidelines.