发明名称 |
Method of optimizing the space and improving the write performance of volumes with multiple virtual copies |
摘要 |
Disclosed is a method and apparatus for optimizing memory space and improving the write performance in a data processing system having a data volume with multiple virtual copies thereof. In one embodiment of the method, a first virtual copy of a primary data volume is created. Thereafter, first data of the primary data volume is modified. A second virtual copy of the primary data volume is created after modification of the first data thereof. A write-data transaction for modifying second data of the modified primary data volume is generated after creation of the second virtual copy. The second data of the modified primary data volume is copied to memory allocated to store data of the second virtual copy. The second data of the modified primary data volume is modified after the second data is copied to the memory allocated to store data of the second virtual copy.
|
申请公布号 |
US6996687(B1) |
申请公布日期 |
2006.02.07 |
申请号 |
US20020324812 |
申请日期 |
2002.12.20 |
申请人 |
VERITAS OPERATING CORPORATION |
发明人 |
KEKRE ANAND A.;COLGROVE JOHN A.;KISELEV OLEG |
分类号 |
G06F12/00 |
主分类号 |
G06F12/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|