General Info

1. Reorg tablespace via JCL:
REORG TABLESPACE DBNAME.TSNAME
LOG NO SORTDATA NOSYSREC SORTKEYS DISCARD FROM TABLE QUALIFIER.TABLE_NAME
WHEN (NE_DATE < shelf="DSNSHHA5&DT=" name="RANGE!A1">DASD (z/OS)

2. DASD calculation:
Bytes in a Track = 56,664
Tracks in a Cylinder = 15
Tracks on a Volume = 50,085
Cylinders in a Volume = 3,339
kilobyte = 1024 bytes (1024 = 210), abbreviated KB (Kb is kilobits)
megabyte = 1024 KB = 1,048,576 bytes, abbreviated MB - 1048576
gigabyte = 1024 MB = 1,073,741,824 bytes, abbreviated GB - 1073741824
terabyte = 1024 GB = 1,099,511,627,776 bytes, abbreviated TB - 1099511627776