Disk drives are one of the most commonly replaced hardware components and continue to
pose challenges for accurate failure prediction. In this work, we present analysis and …

The newly-emerging''fail-slow''failures plague both software and hardware where the victim
components are still functioning yet with degraded performance. To address this problem …

This paper presents how the Pangu storage system continuously evolves with hardware
technologies and the business model to provide high-performance, reliable storage services …

Cloud block storage systems support diverse types of applications in modern cloud services.
Characterizing their I/O activities is critical for guiding better system designs and …

Large-scale applications typically spend a large fraction of their execution time performing
I/O to a parallel storage system. However, with rapid progress in compute and storage …

This paper presents the first large-scale field study of NAND-based SSDs in enterprise
storage systems (in contrast to drives in distributed data center storage systems). The study …

Solid state drives (SSDs) play an important role in large-scale data centers. SSD failures
affect the stability of storage systems and cause additional maintenance overhead. To …

Incidents and outages dramatically degrade the availability of large-scale cloud computing
systems such as AWS, Azure, and GCP. In current incident response practice, each team …

As we increasingly rely on SSDs for our storage needs, it is important to understand their
operational characteristics in the field, in particular since they vary from HDDs. This includes …

High-density flash-memory chips are under tremendous demands with the exponential
growth of data. At the same time, the slow read performance of these high-density flash …