A computer system allocates locations in DASD to store a specified length of data. The allocation attempts to minimize the number of I/O operations and seek time for accessing the DASD. The system records addresses and lengths of sets of contiguous available storage locations in the DASD. Then, the system...http://www.google.com.tw/patents/US5390315?utm_source=gb-gplus-share專利 US5390315 - Allocation of uniform contiguous blocks of DASD storage by maintaining both a bit and a bit map record of available storage