Power Failure Protection Scheme for Reliable High-Performance Solid State Disks

Kwanhu BANG; Kyung-Il IM; Dong-gun KIM; Sang-Hoon PARK; Eui-Young CHUNG

doi:10.1587/transinf.E96.D.1078

Power Failure Protection Scheme for Reliable High-Performance Solid State Disks

Kwanhu BANG, Kyung-Il IM, Dong-gun KIM, Sang-Hoon PARK, Eui-Young CHUNG

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Solid-state disks (SSDs) have received much attention as replacements for hard disk drives (HDDs). One of their noticeable advantages is their high-speed read/write operation. To achieve good performance, SSDs have an internal memory hierarchy which includes several volatile memories, such as DRAMs and SRAMs. Furthermore, many SSDs adopt aggressive memory management schemes under the assumption of stable power supply. Unfortunately, the data stored in the volatile memories are lost when the power supplied to SSDs is abruptly shut off. Such power failure is often observed in portable devices. For this reason, it is critical to provide a power failure protection scheme for reliable SSDs. In this work, we propose a power-failure protection scheme for SSDs to increase their reliability. The contribution of our work is three-fold. First, we design a power failure protection circuit which incorporates super-capacitors as well as rechargeable batteries. Second, we provide a method to determine the capacity of backup power sources. Third, we propose a data backup procedure when the power failure occurs. We implemented our method on a real board and applied it to a notebook PC with a contemporary SSD. The board measurement and simulation results prove that our method is robust in cases of sudden power failure.

Publication: IEICE TRANSACTIONS on Information Vol.E96-D No.5 pp.1078-1085

Publication Date: 2013/05/01

Publicized

Online ISSN: 1745-1361

DOI: 10.1587/transinf.E96.D.1078

Type of Manuscript: PAPER

Category: Computer System

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Kwanhu BANG, Kyung-Il IM, Dong-gun KIM, Sang-Hoon PARK, Eui-Young CHUNG, "Power Failure Protection Scheme for Reliable High-Performance Solid State Disks" in IEICE TRANSACTIONS on Information, vol. E96-D, no. 5, pp. 1078-1085, May 2013, doi: 10.1587/transinf.E96.D.1078.
Abstract: Solid-state disks (SSDs) have received much attention as replacements for hard disk drives (HDDs). One of their noticeable advantages is their high-speed read/write operation. To achieve good performance, SSDs have an internal memory hierarchy which includes several volatile memories, such as DRAMs and SRAMs. Furthermore, many SSDs adopt aggressive memory management schemes under the assumption of stable power supply. Unfortunately, the data stored in the volatile memories are lost when the power supplied to SSDs is abruptly shut off. Such power failure is often observed in portable devices. For this reason, it is critical to provide a power failure protection scheme for reliable SSDs. In this work, we propose a power-failure protection scheme for SSDs to increase their reliability. The contribution of our work is three-fold. First, we design a power failure protection circuit which incorporates super-capacitors as well as rechargeable batteries. Second, we provide a method to determine the capacity of backup power sources. Third, we propose a data backup procedure when the power failure occurs. We implemented our method on a real board and applied it to a notebook PC with a contemporary SSD. The board measurement and simulation results prove that our method is robust in cases of sudden power failure.
URL: https://globals.ieice.org/en_transactions/information/10.1587/transinf.E96.D.1078/_p

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@ARTICLE{e96-d_5_1078,
author={Kwanhu BANG, Kyung-Il IM, Dong-gun KIM, Sang-Hoon PARK, Eui-Young CHUNG, },
journal={IEICE TRANSACTIONS on Information},
title={Power Failure Protection Scheme for Reliable High-Performance Solid State Disks},
year={2013},
volume={E96-D},
number={5},
pages={1078-1085},
abstract={Solid-state disks (SSDs) have received much attention as replacements for hard disk drives (HDDs). One of their noticeable advantages is their high-speed read/write operation. To achieve good performance, SSDs have an internal memory hierarchy which includes several volatile memories, such as DRAMs and SRAMs. Furthermore, many SSDs adopt aggressive memory management schemes under the assumption of stable power supply. Unfortunately, the data stored in the volatile memories are lost when the power supplied to SSDs is abruptly shut off. Such power failure is often observed in portable devices. For this reason, it is critical to provide a power failure protection scheme for reliable SSDs. In this work, we propose a power-failure protection scheme for SSDs to increase their reliability. The contribution of our work is three-fold. First, we design a power failure protection circuit which incorporates super-capacitors as well as rechargeable batteries. Second, we provide a method to determine the capacity of backup power sources. Third, we propose a data backup procedure when the power failure occurs. We implemented our method on a real board and applied it to a notebook PC with a contemporary SSD. The board measurement and simulation results prove that our method is robust in cases of sudden power failure.},
keywords={},
doi={10.1587/transinf.E96.D.1078},
ISSN={1745-1361},
month={May},}

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TY - JOUR
TI - Power Failure Protection Scheme for Reliable High-Performance Solid State Disks
T2 - IEICE TRANSACTIONS on Information
SP - 1078
EP - 1085
AU - Kwanhu BANG
AU - Kyung-Il IM
AU - Dong-gun KIM
AU - Sang-Hoon PARK
AU - Eui-Young CHUNG
PY - 2013
DO - 10.1587/transinf.E96.D.1078
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E96-D
IS - 5
JA - IEICE TRANSACTIONS on Information
Y1 - May 2013
AB - Solid-state disks (SSDs) have received much attention as replacements for hard disk drives (HDDs). One of their noticeable advantages is their high-speed read/write operation. To achieve good performance, SSDs have an internal memory hierarchy which includes several volatile memories, such as DRAMs and SRAMs. Furthermore, many SSDs adopt aggressive memory management schemes under the assumption of stable power supply. Unfortunately, the data stored in the volatile memories are lost when the power supplied to SSDs is abruptly shut off. Such power failure is often observed in portable devices. For this reason, it is critical to provide a power failure protection scheme for reliable SSDs. In this work, we propose a power-failure protection scheme for SSDs to increase their reliability. The contribution of our work is three-fold. First, we design a power failure protection circuit which incorporates super-capacitors as well as rechargeable batteries. Second, we provide a method to determine the capacity of backup power sources. Third, we propose a data backup procedure when the power failure occurs. We implemented our method on a real board and applied it to a notebook PC with a contemporary SSD. The board measurement and simulation results prove that our method is robust in cases of sudden power failure.
ER -