Abstract: Techniques are provided for failing over an aggregate from one file system instance to a different file system instance of a distributed scale-out storage system. The aggregate may be stored within distributed storage that is accessible to a plurality of file system instances of the distributed scale-out storage system. When the aggregate is failed over from a first file system instance to a second file system instance, the first file system instance may still have a valid read lease that allows the first file system instance to serve client I/O, directed to the aggregate, using a cache. In order to prevent the first file system instance from serving stale data from the cache before the read lease expires, state machines and a set of control data are used to ensure that the second file system instance attaches to the aggregate only after the read lease has expired.

Abstract: Techniques are provided for failing over an aggregate from one file system instance to a different file system instance of a distributed scale-out storage system. The aggregate may be stored within distributed storage that is accessible to a plurality of file system instances of the distributed scale-out storage system. When the aggregate is failed over from a first file system instance to a second file system instance, the first file system instance may still have a valid read lease that allows the first file system instance to serve client I/O, directed to the aggregate, using a cache. In order to prevent the first file system instance from serving stale data from the cache before the read lease expires, state machines and a set of control data are used to ensure that the second file system instance attaches to the aggregate only after the read lease has expired.

Abstract: Techniques are provided for failing over an aggregate from one file system instance to a different file system instance of a distributed scale-out storage system. The aggregate may be stored within distributed storage that is accessible to a plurality of file system instances of the distributed scale-out storage system. When the aggregate is failed over from a first file system instance to a second file system instance, the first file system instance may still have a valid read lease that allows the first file system instance to serve client I/O, directed to the aggregate, using a cache. In order to prevent the first file system instance from serving stale data from the cache before the read lease expires, state machines and a set of control data are used to ensure that the second file system instance attaches to the aggregate only after the read lease has expired.

Abstract: A method for securing customer sensitive information on private cloud platforms includes receiving, at an on-premises computing system, sensitive information of a user. A local key of the on-premises computing system was previously encrypted by a master key stored at an off-premises computing system. The method includes sending the encrypted local key to the off-premises computing system for decryption, and receiving the decrypted local key in response to sending the encrypted local key to the off-premises computing system. The decrypted local key is decrypted from the received encrypted local key. The method includes decrypting a secret key assigned to the user, encrypting the sensitive information using the decrypted secret key, and storing the encrypted sensitive information.

Abstract: A method and system for enhanced time synchronization with lesser delay and jitter, from a gateway of a network or an external standard time source, over the internet, in a traditional network, including SDN, by NTP clients like newly added devices, spawned VMs and the like, by automatic deployment of the distributed NTP service through DHCP and DNS servers by spawning NTP demons (ntpd), according to the time synchronization requests received, thereby offloading the NTP functionality of the gateway and decreasing NTP traffic.

Abstract: A method and system for enhanced time synchronization with lesser delay and jitter, from a gateway of a network or an external standard time source, over the internet, in a traditional network, including SDN, by NTP clients like newly added devices, spawned VMs and the like, by automatic deployment of the distributed NTP service through DHCP and DNS servers by spawning NTP demons (ntpd), according to the time synchronization requests received, thereby offloading the NTP functionality of the gateway and decreasing NTP traffic.