Alarm-based backup and restoration for a semiconductor storage device
Embodiments of the present invention provide backup and restoration functions for a storage device of a PCI-Express (PCI-e) type that support a low-speed data processing speed for a host. Specifically, embodiments of this invention provide backup and restoration functions for one or more (i.e., a set of) semiconductor storage devices (SSDs). In general, the present invention provides an alarm unit and a secondary power supply coupled to a backup controller. The backup controller is coupled to a backup storage device. When a primary power supply is deactivated (e.g., fails), an alarm unit and the secondary power supply is activated. In response to this activation, the backup controller will backup any data stored on any SSDs of the storage system (as well as any data stored in main memory of the storage system or in main memory of any host server connected thereto). When the primary power supply is reactivated, the secondary power supply (and the alarm unit) is deactivated, and all data backed up is restored to its original source.
1. A system for backing up and restoring a semiconductor storage device (SSD), comprising:
a secondary power supply directly connected to an SSD backup controller;
an alarm unit coupled to the SSD backup controller;
a backup storage device coupled to the SSD backup controller;
at least one SSD memory disk unit coupled to the SSD backup controller, wherein the alarm unit and the secondary power supply are activated when a deactivation of a primary power supply is detected, wherein the SSD backup controller automatically backs up SSD data stored on the at least one SSD memory disk unit to the backup storage device when the deactivation of the primary power supply is detected.
2. The system of claim 1 , wherein the secondary power supply is deactivated when the backup of the SSD data is complete.
3. The system of claim 1 , wherein the backup controller restores the SSD data to the SSD memory disk unit from the backup storage device in response to a reactivation of the primary power supply.
4. The system of claim 1 , further comprising a main memory, wherein the backup controller further backs up main memory data from the main memory to the backup storage device in response to the deactivation of the primary power supply.
5. The system of claim 4 , wherein the backup controller further restores the main memory data to the main memory in response to a reactivation of the primary power supply.
6. The system of claim 1 , the at least one SSD memory disk unit comprising:
a host interface unit;
a DMA controller coupled to the host interface unit;
an ECC controller coupled to the DMA controller;
a memory controller coupled to the ECC controller; and
a memory array coupled to the memory controller, the memory array comprising at least one memory block.
7. The system of claim 1 , the at least one SSD memory disk unit providing storage for an attached computer device.
8. A system for backing up and restoring a network-based semiconductor storage device (SSD), comprising:
a storage system comprising a storage system main memory, at least one SSD memory disk unit, and an alarm unit;
a host server coupled to the storage system, the host server comprising a host server main memory unit; and
a secondary power supply directly connected to a backup controller and a backup storage device, wherein the alarm unit and the backup controller are activated when a deactivation of a primary power supply is detected, and wherein the backup controller automatically backs up: server data from the host server main memory, storage system data from the storage system main memory, and SSD data from the at least one SSD memory disk unit to the backup storage system when an activation of the secondary power supply is detected.
9. The system of claim 8 , wherein the secondary power supply is deactivated when the backup of the server data, the storage system data, and the SSD data is complete.
10. The system of claim 8 , wherein the backup controller restores the server data, the storage system data, and the SSD data from the backup storage device in response to a reactivation of the primary power supply.
11. The system of claim 8 , the at least one SSD memory disk unit comprising:
a host interface unit;
a DMA controller coupled to the host interface unit;
an ECC controller coupled to the DMA controller;
a memory controller coupled to the ECC controller; and
a memory array coupled to the memory controller, the memory array comprising at least one memory block.
12. The system of claim 8 , the at least one SSD memory disk urn providing storage for an attached computer device.
13. The system of claim 8 , the primary power supply comprising an uninterruptable power supply.
14. A method for backing up and restoring a semiconductor storage device (SSD), comprising:
coupling an alarm unit to an SSD backup controller;
directly connecting a secondary power supply to the SSD backup controller;
coupling a backup storage device to the SSD backup controller;
coupling at least one SSD memory disk unit to the SSD backup controller;
activating the alarm unit and secondary power supply when a deactivation of a primary power supply is detected; and
automatically backing up SSD data stored on the at least one SSD memory disk unit to the backup storage device using the SSD backup controller when the deactivation of the primary power supply is detected.
15. The method of claim 14 , further comprising deactivating the secondary power supply when the backup of the SSD data is complete.
16. The method of claim 14 , further comprising restoring the SSD data to the SSD memory disk unit from the backup storage device using the backup controller in response to a reactivation of the primary power supply.
17. The method of claim 14 , further comprising backing up main memory data from a main memory to the backup storage device using the backup controller in response to the deactivation of the primary power supply.
18. The method of claim 17 , further comprising:
restoring the main memory data to the main memory using the backup controller in response to a reactivation of the primary power supply.
19. The method of claim 14 , the at least one SSD memory disk unit comprising:
a host interface unit;
a DMA controller coupled to the host interface unit;
an ECC controller coupled to the DMA controller;
a memory controller coupled to the ECC controller; and
a memory array coupled to the memory controller, the memory array comprising at least one memory block.
20. The method of claim 14 , the at least one SSD memory disk unit providing storage for an attached computer device.