公开(公告)号：US20180189301A1

公开(公告)日：2018-07-05

申请号：US15738111

申请日：2015-09-22

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Rajkumar Kannan ,  Ramesh Kannan Karuppusamy ,  Arun Vishnu Pathanipadath Karthikeyan

IPC: G06F17/30 ,  G06F21/62

CPC classification number: G06F16/125 ,  G06F16/113 ,  G06F16/116 ,  G06F16/181 ,  G06F21/6209

Abstract: Some examples described herein relate to managing appendable state of an immutable file. In an example, a request may be received to append an immutable file. A determination may be made whether the request is a first request to append immutable file. In response to determination that the request is the first request to append the immutable file, immutable file may be modified from an original state to an appendable state, wherein immutable file is appendable during the appendable state. A time period may be defined for immutable file to remain in the appendable state. A determination may be made whether immutable file is accessed during the time period. In response to determination that immutable file is not accessed during the time period, immutable file may be reverted from the appendable state to the original state upon expiration of the time period.

公开(公告)号：US20180137131A1

公开(公告)日：2018-05-17

申请号：US15577593

申请日：2015-06-03

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Ramesh Kannan Karuppusamy ,  Arun Vishnu Pathanipadath Karthikeyan ,  Rajkumar Kannan

IPC: G06F17/30

CPC classification number: G06F16/125 ,  G06F3/0605 ,  G06F3/0649 ,  G06F3/067 ,  G06F11/00 ,  G06F16/113 ,  G06F16/2365 ,  G06F21/604 ,  G06F21/64 ,  G06F2221/2137

Abstract: An example computing device includes a data storage device and a controller coupled to the data storage device. The data storage device includes a storage segment. The controller is to, in response to receiving a retention feature activation of the storage segment, compute a retention enabled time of the storage segment; in response to receiving a retention request associated with data in the storage segment, compute an absolute segment survival time based on the retention enabled time and compute a retention expiry time of the data based on the absolute segment survival time. The retention request is associated with a retention period. The controller is further to determine whether the retention period has lapsed based on the retention expiry time.