Real time signal analysis of a remote block data storage device

• US 6,694,281 B2
• Filed: 04/22/2002
• Issued: 02/17/2004
• Est. Priority Date: 07/12/2001
• Status: Expired due to Fees

• Current Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Original Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Inventors: Magill, Michael G., Arnaout, Badih M.
• Primary Examiner(s): Barlow, John
• Assistant Examiner(s): Walling, Meagan S
• Application Number:
  US10/127,255
• Publication Number:
  US 20030014209A1
• Time in Patent Office: 666 Days
• Field of Search: 702/122, 702/108, 702/186, 714/699, 714/718, 365/189.05, 365/200, 365/305, 365/45, 711/162, 711/147, 711/152, 711/161
• US Class Current: 702/122
• CPC Class Codes: G06F 11/2294 by remote test

Abstract

Method and apparatus for remote data acquisition from a block data storage device having a data storage medium, a host interface port, a serial communication (COM) port and a programmable controller with associated platform firmware and associated diagnostic firmware. A client computer and a server computer are connected to a computer network (such as the Internet), and the data storage device is connected to the server computer via the host interface port. A data acquisition device such as a disk drive analyzer having digital oscilloscope capabilities is connected to the server computer and the data storage device. Requests from the client computer are transmitted via the network to result in a first command to the data storage device to execute the platform firmware and a second command to capture a waveform signal from the data storage device. The waveform signal is transmitted real time for display by the client computer.

Claims

1. A method for diagnosing a remote block data storage device having a data storage medium, a host interface port and a programmable controller with associated platform firmware and associated diagnostic firmware, the method comprising:

connecting a client computer and a server computer to a computer network;

connecting the data storage device to the server computer via the host interface port;

connecting a data acquisition device to the data storage device and to the server computer;

using the server computer to transmit a first command to the data storage device to cause the controller to execute the platform firmware;

using the client computer to transmit a second command to the data acquisition device to capture a waveform signal from the data storage device which characterizes operation of the platform firmware in response to the first command; and

transmitting the waveform signal across the computer network to the client computer.

2. The method of claim 1, wherein the client computer transmits a request to the server computer which, in response thereto, issues the first command to the data storage device.

3. The method of claim 1, wherein the data storage device further comprises a serial communication (COM) port connected to the server computer, and wherein the client computer further transmits a request across the network to the server computer which, in response thereto, issues a third command to the COM port to concurrently execute the diagnostic firmware.

4. The method of claim 1, wherein the data acquisition device comprises a digital oscilloscope so that the waveform signal comprises an oscilloscope signal obtained from the digital oscilloscope.

5. The method of claim 1, further comprising concurrently displaying the waveform signal on a display of the server computer and on a display of the client computer.

6. The method of claim 1, further comprising providing the data storage device with a plurality of adjacent test pins, connecting a test interface daughter board to the test pins, to the server computer and to the data acquisition device, and transmitting a connection request from the client computer through the network to cause selected ones of the test pins to be electrically coupled to the data acquisition device so that the waveform signal is generated from the selected ones of the test pins.

7. The method of claim 1, wherein the computer network comprises the Internet.

8. A system for remote data acquisition, comprising:

a client computer and a server computer interconnected through a computer network;

a block data storage device having a host interface port in communication with the server computer, a data storage medium and a programmable controller with associated platform firmware to control transfer of data between the data storage medium and the server computer;

a data acquisition device connected to at least one test node of the data storage device and connected to an interface port of the server computer, and

control software loaded into a memory of the server computer and configured to, upon execution, transmit a first command to the controller to execute the platform firmware, to transmit a second command to the data acquisition device to capture a waveform signal from the data storage device which characterizes operation of the platform firmware in response to the first command, and transmit the waveform signal across the computer network to the client computer, wherein the first and second commands are issued in response to requests initiating from the client computer.

9. The system of claim 8, wherein the computer network comprises the Internet.

10. The system of claim 8, further comprising web browser software loaded into a memory of the client computer, wherein a user of the client computer issues the requests for the first and second commands to the server computer by the web browser software.

11. The system of claim 8, wherein the data storage device further comprises a serial communication (COM) port connected to the server computer and diagnostic firmware used to monitor operation of the platform firmware, and wherein the client computer further transmits a request across the network to the server computer which, in response thereto, issues a third command to the COM port to concurrently execute the diagnostic firmware.

12. The system of claim 8, wherein the data acquisition device comprises a digital oscilloscope so that the waveform signal comprises an oscilloscope signal obtained from the digital oscilloscope.

13. The system of claim 8, further configured to concurrently project the waveform signal on a display of the server computer and on a display of the client computer.

14. The system of claim 8, further comprising a test interface daughter board connected to the server computer, the data acquisition device and to a plurality of test nodes of the data storage device, the test interface daughter board housing a multiplexor and selection logic which, in response to a connection request from the client computer through the network, causes at least a selected one of the test nodes to be electrically coupled to the data acquisition device so that the waveform signal is generated from the at least one of the test nodes.

15. The system of claim 8, wherein the data storage device comprises a disc drive so that the data storage medium comprises a rigid magnetic recording disc.

16. The system of claim 8, wherein the client computer additionally issues a parametric configuration request to the server computer to set the data acquisition device to a desired parametric configuration.