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Storage Server Power Management Using I/O Read Write Usage Data And High Access Speed Media Device

IP.com Disclosure Number: IPCOM000206427D
Publication Date: 2011-Apr-26
Document File: 3 page(s) / 88K

Publishing Venue

The IP.com Prior Art Database

Abstract

In today's storage environment a storage server remains powered ON even when there are no I/O activities running. Additionally, the I/O read write usage data is collected from the machine in regular intervals. This article describes a proposed method of use this I/O read write usage data to reduce power consumption of the machine, including but not limited to control for hardware such as the primary power supplies, server, and adapters.

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Storage Server Power Management Using I /O Read Write Usage Data And High Access Speed Media Device

Storage server remains powered ON even when there are no I/O activities running. Currently, the I/O read write usage data is collected from the machine in regular intervals. The proposal is to use this data to reduce power consumption of the machine such as primary power supplies, server, and adapters.

Saving energy by storage power management with I/O read write usage data and high access speed media device.
- Put high access speed media (solid state drives, flash memory, etc) to save host data on Host Adapter.

- Detect I/O in idle mode and low level I/O traffic by using I/O read write usage data. The I/O read write usage data is frequently sample data on host port / channel. There is a threshold set up to monitor the I/O usage count. When I/O usage is below the threshold, it will trigger notification event and the power saving method that will be applied.

- The notification event will inform the customer that host/channel has low I/O activities, and will wait a predefined amount of time for user response before putting the hardware into saving

power mode.

- When the predefined amount of power saving time is reached, cache data will be saved in NVS (

Nonvolatile Storage), to SSD (Solid State Device) or DDM (Data Device Module) and to high

access speed media device.

- The notification event will notify host/channel that the hardware is set in idle mode.

- The powe...