1) Variables and update frequency:
Row_num    
FEB_num    
VMM_num    
VMM_ch         
strip_ch

Very rare update - stores a hardware map which is static unless there is a mistake discovered or a hardware failure that requires remapping. May be updated < 10 times in next few years.

2)  IDL structure:
```
/* fttHardwareMap.idl
*
* Table: fttHardwareMap
*
* description: // sTGC (ftt) hardware map
*
*/

struct fttHardwareMap {
    octet feb[1251]; /* 1-6 */
    octet vmm[1251]; /* 1-4 */
    octet row[1251]; /* 0-4 */
    octet vmm_ch[1251]; /* 0-64 */
    octet strip[1251]; /* 0-166*/
};
```

3) I am always a little confused about this. Updates rare, expect 1250 rows each with the structure above
4) size of structure
5 bytes * 1251 array lengths
Total size = 6255bytes

5) jdb