Mac OS X Server 10.2: Tested and Theoretical Maximums (Limits)

Note: Tested maximums reflect the test configuration and do not represent a guarantee of performance. Your experience may vary depending on factors such as computer model, microprocessor speed, network conditions, hard disk space, disk fragmentation, installed memory (RAM), client load, total number of services running on the server, or other software used on the server. Information left blank in the table is not yet available.

Tested and Theoretical Maximums

Component	Maximum	Tested	Theoretical
Core OS	Number of Open Files	1000	12288
AFP Server	Number of Connected Users	1000	N/A
User Accounts	User Comments Character Limit	54662	N/A
Directory Services	Number of Groups per User	16	16
Directory Services	Number of Groups	10000
Directory Services	Number of Users	10000
AFP Server	Shareable Volume Size	8 TB	8 TB
AFP Server	Number of Files per Volume	250 million	2 147 483 646
AFP Server	Number of Shared Items	255	255
Web Server	Number of Connected Users		2048
SMB Server	Number of Open Files	1000	12288
SMB Server	Number of Connected Users	1000	1000
Mail Server	Number of Incoming SMTP Connections		512
Mail Server	Number of Outgoing SMTP Connections		256
Mail Server	Number of POP Connections		1024
Mail Server	Number of IMAP Connections		1024
Mail Server	Maximum Size of Mail Database	128 GB
Mail Server	Number of Messages in Mail Database	4 billion
FTP Server	Number of Connected Users		16384
FTP Server	Maximun no. of Connections per User		16384
Web Server	Number of Open Files		12288
QTSS	Number of Connected Users per Streamed File		12288
QTSS	Number of Simultaneously Streamed Files		12288
QTSS	Number of Connected Users		12288
Print Server	Number of Queues	60
Macintosh Manager Client	Number of Approved Desktop Printers Per Workgroup	5	10
NetBoot	Number of Clients Simultaneously Using NetBoot	50
Mail Server	Number of Entries in SMTP Server Rejection List	128	N/A
Mail Server	Number of Entries in Approved SMTP Hosts List	128	N/A