摘要:
An apparatus, system, and method are disclosed for rapidly grading the operating condition of computer storage. A storage log module 312 logs error information regarding any error in a storage subsystem 302 that occurs during normal operation. A storage test module 314 performs a cursory check 318 of the storage subsystem 302 as requested by a user. A storage diagnostic module 316 grades the storage subsystem 302 on an operating condition scale based at least in part upon the error information logged and upon results of the cursory check 318. In one embodiment, the storage subsystem 302 is graded as pristine if no error has been logged and no error was detected by the cursory check 318, as potentially failing if any error has been logged but no error was detected by the cursory check 318, and as failing if any error was detected by the cursory check 318.
摘要:
A system, method, and program product is provided that recovers from a sector error affecting a critical file. A damaged sector prevents a critical file from being read prevents the computer system from booting. A controller records a sector number corresponding to the damaged sector. The system is rebooted using an alternative boot media. The system accesses the primary nonvolatile storage media after the rebooting. The damaged sector number is read from the error log and a file map is used to determine the critical file that is stored in the damaged sector. A backup copy of the critical file is retrieved from a backup media. The backup copy is written to the primary media using undamaged sectors and the critical file is mapped to the undamaged sectors. The system is subsequently booted successfully from the primary nonvolatile storage media.
摘要:
An apparatus, system, and method are disclosed for rapidly grading the operating condition of computer storage. A storage log module 312 logs error information regarding any error in a storage subsystem 302 that occurs during normal operation. A storage test module 314 performs a cursory check 318 of the storage subsystem 302 as requested by a user. A storage diagnostic module 316 grades the storage subsystem 302 on an operating condition scale based at least in part upon the error information logged and upon results of the cursory check 318. In one embodiment, the storage subsystem 302 is graded as pristine if no error has been logged and no error was detected by the cursory check 318, as potentially failing if any error has been logged but no error was detected by the cursory check 318, and as failing if any error was detected by the cursory check 318.
摘要:
A system, method, and program product is provided that recovers from a sector error affecting a critical file. A damaged sector prevents a critical file from being read prevents the computer system from booting. A controller records a sector number corresponding to the damaged sector. The system is rebooted using an alternative boot media. The system accesses the primary nonvolatile storage media after the rebooting. The damaged sector number is read from the error log and a file map is used to determine the critical file that is stored in the damaged sector. A backup copy of the critical file is retrieved from a backup media. The backup copy is written to the primary media using undamaged sectors and the critical file is mapped to the undamaged sectors. The system is subsequently booted successfully from the primary nonvolatile storage media.
摘要:
A method and system for identifying and recovering a file damaged by a hard drive failure. The method includes monitoring event logs, mapping at least one failing sector to at least one corresponding corrupted file if a hard drive failure is detected, and performing a selected remedial procedure based on the at least one corrupted file. According to the method and system disclosed herein, the user is quickly informed of the corrupted file and is given choices for remedial procedures.
摘要:
Embodiments of the invention broadly contemplate systems, methods and arrangements for managing Adjacent Track Interference (ATI) risk through intelligent management of a table that logs individual tracks creating a risk of ATI in tracks adjacent thereto. Embodiments of the invention provide that tracks considered being at low risk for creating ATI be ejected from the table in order to maintain a track-level log of manageable size.
摘要:
A system and method to avoid disk lube pooling is presented. A track access monitor tracks the number of times that a program accesses a particular track located on a hard drive. When the track access monitor determines that the number of track accesses to a particular track exceed a track access threshold, the track access monitor invokes a sequence of events to scan adjacent tracks in order to uniformly redistribute lubrication over the hard drive. In one embodiment, the track access monitor incrementally performs the adjacent track scanning during hard drive idle periods, such as when the system waits for a password from a user or when the operating system conserves power and idles the hard drive due to lack of activity.
摘要:
A method and apparatus are disclosed for concatenating a first RAID and a second RAID. The apparatus includes a concatenation module and a direction module. The concatenation module concatenates a first Redundant Array of Independent Disks (“RAID”) with a second RAID into a top-level RAID. The first RAID and the second RAID may have disparate operational characteristics. The direction module directs storage operations to one of the first RAID and the second RAID based on a direction policy.
摘要:
An apparatus and method are disclosed for distributing writes asymmetrically. An asymmetric distribution module calculates an asymmetric distribution of writes for a plurality of drives. A write module writes data to each drive in accordance with the asymmetric distribution of writes.
摘要:
A method and apparatus are disclosed for concatenating a first RAID and a second RAID. The apparatus includes a concatenation module and a direction module. The concatenation module concatenates a first Redundant Array of Independent Disks (“RAID”) with a second RAID into a top-level RAID. The first RAID and the second RAID may have disparate operational characteristics. The direction module directs storage operations to one of the first RAID and the second RAID based on a direction policy.