Technical Specifications

Year 2038 Safe Yes
Timestamp Granularity 100ns (UNIX Epoch)
Rx Throughput >8.2 gbit/second
Volume IDs per Cell 264
Object IDs per Volume 295 directories and 295 files
Maximum Distributed DB Size 16 exabytes (264 bytes)
Access Control Lists Per Object
Directory ACL Inheritance Yes
Volume Access Control Policies Yes
Mandatory Locking Yes
GSS Authentication (RxGK) Yes
AES-256/SHA-1 Wire Privacy (RxGK) Yes
Mandatory Security Levels* Yes
Cache Poisoning Attacks yfs-rxgk: No; rxkad: Yes
Combined Identity Tokens (user@device) Yes
Default Volume Quota 20 GB
Maximum Assignable Quota 16 zettabytes (274 bytes)
Maximum Reported Volume Size 16 zettabytes (274 bytes)
Maximum Volume Size 16 zettabytes (274 bytes)
Maximum Partition Size 16 zettabytes (274 bytes)
Servers run as “root” No
POSIX O_DIRECT support Yes
IBM AFS 3.6 client support Yes (AFS3 protocol only)
OpenAFS 1.x client support Yes (AFS3 protocol only)
IBM AFS 3.6 DB server support Yes (AFS3 protocol only)
OpenAFS 1.x server support Yes (AFS3 protocol only)
DB Servers support AFS file servers Yes
Thread safe libraries Yes
Lock State Callback Notification Yes
CreateFile in Locked State Yes
Server Thread Limits Up to OS capability
Dynamic Thread Pools Yes
IPv6 enabled Yes
Microsoft Direct Access compatibility Yes

*A Security Level is defined as a Rx Security class (rxkad or rxgk) combined with cryptographic requirements for data privacy and integrity protection. Security Levels are enforced at the File Server.