Predictable latency on flash storage is a long-pursuit goal, yet, unpredictability stays due to
the unavoidable disturbance from many well-known SSD internal activities. To combat this …

This paper proposes a reinforcement learning-based watchdog (RLW) that examines solid-
state drive (SSD) liveness or failures by faults (eg, controller/power faults and high …

QLC (4-bit-per-cell) and more-bit-per-cell 3D NAND flash memories are increasingly
adopted in large storage systems. While achieving significant cost reduction, these …

All-flash array (AFA) is a popular approach to aggregate the capacity of multiple solid-state
drives (SSDs) while guaranteeing fault tolerance. Unfortunately, existing AFA engines inflict …

Flash-based solid-state drives (SSDs) have been widely adopted in various storage
systems, manifesting better performance than their forerunner HDDs. However, the …

Popular software storage architecture Linux Multiple-Disk (MD) for parity-based RAID (eg,
RAID5 and RAID6) assigns one or more centralized worker threads to efficiently process all …

RAID (Redundant Array of Independent Disks) has been widely adopted for decades, as it
provides enhanced throughput and redundancy beyond what a single disk can offer. Today …

Following a conventional design principle that pays more fast-CPU-cycles for fewer slow-
I/Os, popular software storage architecture Linux Multiple-Disk (MD) for parity-based RAID …

We present BigKV, a key-value cache specifically designed for caching large objects in an
all-flash array (AFA). The design of BigKV is centered around the unique property of a …

All-flash array (AFA) has become one of the most popular storage forms in diverse
computing domains. While traditional AFA implementations adopt the block interface to …