Supported Configurations and Known Limits for Qumulo Core

This section provides an overview of supported configurations and known limits for Qumulo Core.

Supported Configurations

Configuration Type	Supported Value
Protocols	FTP FTPS NFSv3 NFSv4.1 S3 API SMB 2.002 SMB 2.1 SMB 3.0 SMB 3.1 SMB 3.1.1
Browser	Google Chrome 80 (and higher)
Clients over SMB	macOS 10.14 (and higher) Windows 7 (and higher)
Clients over NFS	macOS 10.14 (and higher) Linux Kernel 2.6.x (and higher)
Linux Configuration	Qumulo Core is up to date with all Ubuntu 20.04 security updates.
Domain-Functional Level	Microsoft Windows Server 2008 R2 (and higher) Note Qumulo Core doesn’t support Samba Domain Controllers.
Kerberos V5 Encryption Types	RC4-HMAC-MD5 AES256-CTS-HMAC-SHA1 AES128-CTS-HMAD-SHA1
LDAP Servers	OpenLDAP for Group Expansion
Python Version for `qq` CLI	3.8 (and higher)

Limit Type	Maximum Value
Cluster Size	100 nodes
NFS Exports	64,000
SMB Shares	40,000
Access Control Entries (ACEs) in an Access Control List (ACL)	200
NFS Groups	16, when not using LDAP or Active Directory for RFC 2307 attributes
Characters in Cluster Name	2-15, alphanumeric and hyphen (`-`)
Characters in Full Path (Path Name)	32,760 (limited by protocol)
Characters in File Path Component (File or Directory)	255 (limited by protocol)
Files in a Directory	4.3 billion
File Size	9 exabytes
Total Files	18 quintillion
Hard Links for Each File	1,024
LDAP Domains	1
Active Directory Domains	1
DNS Servers	3
Snapshots	40,000
Quotas	4.3 billion Note This approximate value of 2³² is equivalent to the possible maximum of directories or the entire inode space.
S3 Bucket Object Versions	Unlimited (4,294,967,296 theoretical)
Total Replication Relationships	100 Note If a directory is more than 100 levels below the file system root directory, you can’t use it as a replication source.
NFS Sockets	8,000 TCP sockets for each node Note A client configured with the NFS `nconnect` mount option uses multiple sockets.
SMB Sockets	5,000 TCP sockets for each node Note A client configured with the SMB Multichannel feature uses multiple sockets.
S3 API Sockets	8,000 TCP sockets for each node Note By default, a maximum of 5,000 connections can execute actively.
REST API Sockets	1,000 TCP sockets for each node