AuriStor File System Comparison
| Feature | AuriStor | Lustre | NFS V4 | OpenAFS |
| Single namespace | Yes Defaults to /afs |
Yes | Extension Not widely available |
Yes Defaults to /afs |
| Access Control Lists | File or Directory & Volume Multi-factor AFS |
File POSIX |
File POSIX superset |
Directory Single-factor AFS |
| Distributed Architecture | Yes | Yes | Yes | Yes |
| Server platform support | Multi-platform Linux, Solaris, OSX, Windows Server |
Linux Solaris planned |
Broad Hummingbird Maestro Windows Server available |
Multi-platform Linux, Solaris, AIX, HP-UX, OSX |
| Volume Management | Yes Transparent movement of data without downtime |
No Online data migration via HSM extensions |
Extension Implementation dependent |
Yes Transparent movement of data without downtime |
| Volume snapshots | Limited One read only replica One backup |
No Depends on host filesystem |
No | Limited One read only replica One backup |
| Quotas | Volume Total bytes Object count |
Yes Total bytes |
No | Volume Total bytes |
| POSIX Extended Attributes | No Planned |
Yes | Yes | No |
| Locking | Yes Whole file Mandatory and Advisory |
Yes No lockf/flock yet |
Yes Mandatory and Advisory |
Yes Whole file only Advisory |
| Transport | UDP IPv4 and IPv6 | TCP IPv4 | TCP | UDP IPv4 |
| Replication | Volume Read-Only Read-Write (2016) |
Local RAID, not multi-server yet |
Extension Implementation specific |
Volume Read-Only |
| Object Storage Integration | Yes L-Store |
Yes | Extension In pNFS/NFS v4.1 |
No |
| Location Independent | Yes | Yes Object Storage Servers are transparent |
No Referrals offer limited functionality |
Yes |
| Encryption | Yes AES-256 |
Yes AES-256 |
Yes AES-256 |
Poor 56-bit fcrypt |
| Authentication | Yes GSSAPI / Kerberos 5 |
Yes GSSAPI / Kerberos 5 |
Yes GSSAPI / Kerberos 5 |
Yes Kerberos 4 and Kerberos 5 |
| Combined Identities | Yes User and Machine |
No | No | No |
| Multiplatform | Yes Linux, Windows, OSX, Solaris, iOS |
No Limited Windows pCIFS client. No Mac client yet. |
Yes Proprietary Windows client |
Yes Windows, Mac, Linux, most Unix variants. |
| Scalability | Yes Tens to hundreds of thousands of clients per server |
Yes 30000 clients per node |
Yes | Yes Hundreds to thousands of clients per server |
| Performance | High Limited by transport. |
High Optimized Uses object-based storage |
Varies pNFS extension |
Varies Limited by transport |
| Open Source | No Source code licenses are available |
Yes GPL |
Available UMichigan CITI reference implementation is GPL |
Yes IBM Public License V1.0 |
| Commercial Support | Yes | Yes Oracle |
Yes Typically from OS vendor |
Yes AuriStor, Inc. and others |