Advanced Storage

Vapor integrates several advanced Linux storage technologies for enterprise reliability and performance.

Multipath I/O (MPIO)

For Fibre Channel or highly available iSCSI setups, a host may have multiple physical paths to the same storage LUN.

Navigate to Storage > Multipath to configure multipathd.

• Devices: View aggregated mpath devices and their underlying active/standby paths.
• Policy: Configure the path selector algorithm (e.g., round-robin, queue-length).
• Blacklist: Ignore specific local devices (like the boot drive) from multipath aggregation.

Software RAID

Vapor supports creating and managing Linux Software RAID (mdadm) arrays.

1. Navigate to Storage > RAID.
2. Click Create Array.
3. Select the RAID level (0, 1, 5, 6, 10).
4. Select the available, unformatted disks to include in the array.
5. The resulting /dev/mdX device can be formatted and used as a highly available storage pool.

Btrfs & OCFS2

• Btrfs: Vapor provides interface tools to manage Btrfs subvolumes and snapshots directly.
• OCFS2: For clustered environments, Vapor can interact with the o2cb cluster stack to format and mount shared Oracle Cluster File System 2 volumes, ensuring safe concurrent access to LUNs.