| Tool | Purpose | Availability |
|------|---------|--------------|
| xsanctl | Manage Xsan on macOS | Built‑in (macOS with Xsan client) |
| cvfsck | Check/repair CVFS volume | Quantum StorNext package |
| cvlabel | Display/manage volume labels | StorNext package |
| asr | Block‑copy volumes | Built‑in macOS |
| StorNext Client (Windows/Linux) | Cross‑platform access | Commercial (Quantum) |
| Xray for Xsan | Forensic parsing | Third‑party (commercial) |
This is your best bet for modern hardware. Quantum provides a StorNext client for Linux.
Pro tip: Linux ignores Apple’s permission bits (ACLs) by default. You may need to force -o uid=1000,gid=1000 to see your files without "Operation not permitted" errors.
Do not attempt to mount an Xsan volume without verifying the following: xsan filesystem access
Once the StorNext client is installed and configured (/etc/cvfs.conf), use these commands:
Scan for SAN LUNs:
sudo cvlabel
Mount Xsan volume:
sudo mount -t cvfs Media_SAN /mnt/xsan
Automount via fstab:
/dev/cvfs/Media_SAN /mnt/xsan cvfs defaults 0 0
Check mount status:
df -h | grep cvfs
Force unmount (if hung):
sudo umount -f /mnt/xsan
Xsan is Apple’s clustering file system based on StorNext (Quantum). It allows multiple macOS, Windows, and Linux clients to simultaneously read/write to a shared storage area network (SAN). This article covers how to access, mount, troubleshoot, and manage Xsan volumes from the command line and GUI.
Xsan was Apple’s implementation of StorNext (Quantum’s file system). It allowed multiple Macs to share petabytes of storage over Fibre Channel. At its heart, it uses CVFS (Cluster Volume File System).
The bad news: Modern macOS (Ventura and later) stripped out the xsanctl and kernel extensions.
The good news: Because Xsan is StorNext, you are not locked into Apple hardware. This is your best bet for modern hardware