Table A-1 lists the maximum and minimum values for the HiRDB system configuration.

Table A-1 Maximum and minimum values for the HiRDB system configuration

Item	Minimum value	Maximum value	Units
Number of servers that can be created per unit	1	34	Count
Number of single servers	1	1	Count
Number of system managers	1	1	Count
Number of front-end servers	1	1,024	Count
Number of dictionary servers	1	1	Count
Number of back-end servers	1	16,382	Count
Total number of RDAREAs	3	8,388,592	Count
Number of master directory RDAREAs	1	1	Count
Number of data directory RDAREAs	1	1	Count
Number of data dictionary RDAREAs	1	41	Count
Number of user RDAREAs	0	8,388,589	Count
Number of data dictionary LOB RDAREAs	0	2	Count
Number of user LOB RDAREAs	0	8,388,325	Count
Number of registry RDAREAs	0	1	Count
Number of registry LOB RDAREAs	0	1	Count
Number of list RDAREAs	0	8,388,588	Count
Number of HiRDB files per RDAREA	1	16	Count
Number of base tables per RDAREA	0	500	Count
Number of indexes per RDAREA	0	500	Count
Number of lists per RDAREA	0	50,000	Count
Total number of HiRDB files	1	134,217,728	Count
Number of concurrently accessible tables	4	32,000	Count
Maximum number of concurrent connections1	1	2000	Count
Maximum number of users that can be created by HiRDB2	1	Unlimited	Count
Number of users who can own the same list	0	32,767	Count
Number of lists created per user	0	32,767	Count
Number of work tables created per transaction	0	255	Count
Number of global buffers per server3	1	2,000,000	Count
HiRDB file system area	1	1,048,575	MB
Windows file size	0	2631	Bytes

¹ For a configuration with multiple front-end servers, the maximum for number of front-end servers value of pd_max_users is 2,000.

²

• When the Directory Server linkage facility is not used
  The value depends on the size of data dictionary RDAREAs because one row of the data dictionary table (SQL_USERS) is used per user.
  
• When the Directory Server linkage facility is used
  For a user with CONNECT privilege only, the value depends on the directory server specifications. For a user with other privileges, the value is same as when the Directory Server linkage facility is not used.
  

³ However, for the entire system, the maximum is 2,147,483,647.