Maurice Schlumberger Phones & Addresses
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620 Olive St, Menlo Park, CA 94025 (650) 473-6535 (650) 814-5489
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Palo Alto, CA
Publications
Us Patents
Host-Based Virtual Disk Drive For Improving The Performance Of A Hard Disk Drives Input/Output
View pageUS Patent:
6490651, Dec 3, 2002
Filed:
Mar 14, 2000
Appl. No.:
09/525727
Inventors:
Serge Shats - Palo Alto CA
Claude Camp - Pleasanton CA
Maurice Schlumberger - Menlo Park CA
Iouri Bagachev - Sunnyvale CA
Claude Camp - Pleasanton CA
Maurice Schlumberger - Menlo Park CA
Iouri Bagachev - Sunnyvale CA
Assignee:
Maxtor Corporation - Longmont CO
International Classification:
G06F 1200
US Classification:
711112, 711113, 711114, 710 8, 369 48
Abstract:
Software executing in a hard disk drives host computer system increases the perceived efficiency and performance of the hard disk drive. The host computer system implements a âvirtual diskâ that models physical parameters associated with the actual hard disk drive, such as seek time and physical location of the read/write heads. These parameters are used to implement host based disk drive optimization techniques such as command reordering and read-on-arrival commands.
Method And Apparatus For Extending Cache History
View pageUS Patent:
6609177, Aug 19, 2003
Filed:
Nov 12, 1999
Appl. No.:
09/439778
Inventors:
Maurice Schlumberger - Menlo Park CA
Serge Shats - Palo Alto CA
Serge Shats - Palo Alto CA
Assignee:
Maxtor Corporation - Longmont CO
International Classification:
G06F 1208
US Classification:
711122, 711119
Abstract:
Cache history is extended by retaining access history information for storage locations in the underlying level that are no longer represented in the cache. A cache is provided having a plurality of cache entries. Each of the cache entries has cache entry address information. A cache extender is provided having, a plurality of extender entries. Each extender entry has an extender address portion and an extender auxiliary portion. Each extender address portion may have extender entry address information. The cache entry address information of each of the cache entries relates to the extender entry address information of one among the extender address portions, and a storage area of an underlying level of a memory hierarchy is related to the extender entry address information of each of the extender address portions. Additionally, each of the extender auxiliary portions has historical information.
Method And Apparatus For Detection And Management Of Data Streams
View pageUS Patent:
6986019, Jan 10, 2006
Filed:
Apr 21, 2003
Appl. No.:
10/419402
Inventors:
Yuri Bagashev - Sunnyvale CA, US
Jean-Pierre Ruster - Mountain View CA, US
Maurice Schlumberger - Menlo Park CA, US
Jean-Pierre Ruster - Mountain View CA, US
Maurice Schlumberger - Menlo Park CA, US
Assignee:
Maxtor Corporation - Longmont CO
International Classification:
G06F 12/06
US Classification:
711217
Abstract:
A system for the detection and support of data streams is disclosed. The system determines whether new commands comprise a data stream. If a new data stream is detected, the system next determines whether adequate resources are available to launch the new data stream. If the system determines that the data stream can be launched, system resources, particularly cache memory space, are assigned to the data stream to provide the data stream with the necessary amount of data throughput needed to support the data stream efficiently. The data stream's throughput is the amount of data that the stream requires per unit time. The system monitors all supported data streams to determine when a particular data stream has terminated, at which time resources dedicated to the data stream are released and become available to support other data streams. The cache for each supported data stream is maintained at as full a level as possible, with the cache for the “least full” data stream given priority for refresh. Allocating resources by throughput allows for more efficient resource utilization.
System And Method For Caching Data Streams On A Storage Media
View pageUS Patent:
7139873, Nov 21, 2006
Filed:
Jun 8, 2001
Appl. No.:
09/877263
Inventors:
Jean-Pierre Ruster - Mountain View CA, US
Maurice Schlumberger - Menlo Park CA, US
Maurice Schlumberger - Menlo Park CA, US
Assignee:
Maxtor Corporation - Longmont CO
International Classification:
G06F 12/02
US Classification:
711113, 711 4, 711100, 711111, 711112, 711165, 711166, 707205, 345555
Abstract:
A system and method for caching and managing data streams from a storage media is disclosed. The system includes a plurality of virtual buffers for a plurality of data streams. Each data stream correlates to a virtual buffer. The system also includes a cache memory to store the plurality of virtual buffers. The system also includes a stream manager to assign the plurality of data streams to the plurality of virtual buffers.
Disk Drives And Methods Allowing For Super Silent Seeks
View pageUS Patent:
7289291, Oct 30, 2007
Filed:
Aug 3, 2005
Appl. No.:
11/196061
Inventors:
Maurice Schlumberger - Menlo Park CA, US
Assignee:
Maxtor Corporation - Longmont CO
International Classification:
G11B 5/596
G11B 33/14
G11B 19/02
G11B 33/14
G11B 19/02
US Classification:
360 7806, 360 7804, 360 9702
Abstract:
A disk drive includes a disk, a head, an actuator, and a servo controller. The servo controller controls a movement of the actuator based on a super silent seek profile to cause the actuator to perform a super silent seek in which an acoustic output due to the movement of the actuator is imperceptible to human listeners. A maximum jerk of the super silent seek profile may be less than a maximum jerk of a silent seek profile divided by ten. A snap associated with the super silent seek profile may be always less than a particular snap level, such that any change in the jerk associated with the super silent seek profile is gradual. The disk drive may further include a main controller that is configured to receive a command from an operating system, a user, and the like to perform a seek in a super silent seek mode.
Host-Based Power Savings Method And Apparatus
View pageUS Patent:
7334144, Feb 19, 2008
Filed:
Jun 4, 2004
Appl. No.:
10/861114
Inventors:
Maurice Schlumberger - Menlo Park CA, US
Assignee:
Maxtor Corporation - Scotts Valley CA
International Classification:
G06F 1/32
US Classification:
713320, 713300, 713310, 713321, 713322, 713323, 713324, 713330, 713340, 711 4, 711112, 711114, 455574
Abstract:
A system which includes a disk drive or other storage device coupled to a host system provides for reduction of the amount or rate of drive power consumption using procedures which are at least partially executed on the host. The system can be configured to reduce average power draw, maximum power draw, or both. Host-based procedures can be tailored to specific and/or changing environments and can decrease some or all expenses associated with previous attempts to reduce HDD power consumption.
Data Storage Device Security System
View pageUS Patent:
7507096, Mar 24, 2009
Filed:
Oct 7, 2005
Appl. No.:
11/246918
Inventors:
Mike Lee - San Jose CA, US
Maurice Schlumberger - Menlo Park CA, US
Yin Shih - Saratoga CA, US
Matt Levy - San Francisco CA, US
Maurice Schlumberger - Menlo Park CA, US
Yin Shih - Saratoga CA, US
Matt Levy - San Francisco CA, US
Assignee:
Maxtor Corporation - Scotts Valley CA
International Classification:
H01R 13/44
US Classification:
439133
Abstract:
A locking data cable () is disclosed. The data cable () includes a data plug () and an associated lock (). When the data plug () is engaged with a data port () of a data storage device (), an actuator () of the locking data cable () may be used to change the lock () from an unlocked position to a locked position.
Methods And Structure For Limiting Storage Device Write Caching
View pageUS Patent:
7660945, Feb 9, 2010
Filed:
Sep 29, 2004
Appl. No.:
10/952981
Inventors:
Michael M. Lee - San Jose CA, US
Maurice L. Schlumberger - San Jose CA, US
Maurice L. Schlumberger - San Jose CA, US
Assignee:
Seagate Technology, LLC - Scotts Valley CA
International Classification:
G06F 12/00
US Classification:
711113, 711118
Abstract:
Methods and structures for limiting the write portion of a local cache memory in one or more disk drives of a storage system such that a storage controller coupled to each may mirror the content and structure of the write portion of each disk drive. The size of the write portion of the local cache memory in a disk drive controller may be controlled by the storage controller or other host device. The size of the write portion may be controlled by switch settings to select among a plurality of predefined sizes or may be programmed by the storage controller or other host device. Programming such a size value may be by setting parameter values in a configuration page of a SCSI disk drive's local memory or may be by a vendor unique command sent by a host device to the disk drive.