Stacking database: Index component

The size of the index component of the Stacking Database is determined by the calculated values, that is, the number of blocks and the actual block size. These are stored in the CTTSTKI member of the IOA INSTWORK library.

The space requirements are automatically calculated based on the values you specify in the Control‑M/Tape Stacking Database Space Calculation screen. (Since Control-M/Tape does not support extents to the index file, some calculated information (identified in the following table by ***) may be blank.)

Table 124 Automatically calculated parameters—Index component

Parameter	Description
Required blocks	***
Primary	Number of blocks in the primary extent. Maximum number of blocks is 65535.
Secondary	***
Extents needed	***
Actual block size	Block size of the database file to be used.
3380 Tracks	Calculated number of 3380 tracks on the disk, for the data components file.
3390 Tracks	Calculated number of 3390 tracks on the disk, for the data components file.

Parent Topic

Step 5.2 – Stacking database