For many primary storage customers, storage must balance the requirements for large capacity, high performance, and low cost. A well studied technique is to place a solid state drive (SSD) cache in front of hard disk drive (HDD) storage, which can achieve much of the performance benefit of SSDs and the cost per gigabyte efficiency of HDDs. To further lower the cost of SSD caches and increase ef...

Our Netra NFS group at Sun set out to solve the challenging problem of providing remote Network File System (NFS) service with high performance and availability. An NFS server must guarantee the permanence of changes to the file system before acknowledging an NFS request. Thus, the server’s underlying local file system must perform update operations synchronously to stable storage with potentia...

Spin transfer torque magnetic random access memory (STT-MRAM) is considered as one of the most promising candidates to build up a true universal memory thanks to its fast write/read speed, infinite endurance and non-volatility. However the conventional access architecture based on 1 transistor + 1 memory cell limits its storage density as the selection transistor should be large enough to ensur...

Ternary content addressable memories (TCAMs) perform high-speed lookup operation but when compared with static random access memories (SRAMs), TCAMs have certain limitations such as low storage density, relatively slow access time, low scalability, complex circuitry, and are very expensive. Thus, can we use the benefits of SRAM by configuring it (with additional logic) to enable it to behave li...

Ternary content-addressable memory (TCAM) is often used in high speed search intensive applications such as ATM switch, IP filters. Hence, currently ZTCAM, is introduced which emulates the TCAM functionality with SRAM. It has some drawbacks such as low scalability, low storage density, slow access time and high cost. But this paper proposes novel memory architecture of existing Z-TCAM, but with...

Concurrent Big Data applications often require high-performance storage, as well as ACID (Atomicity, Consis­ tency, Isolation, Durability) transaction support. Although blobs (binary large objects) are an increasingly popular storage model for such applications, state-of-the-art blob storage systems offer no transaction semantics. This demands users to coordinate data access carefully in order ...

The on-line transaction processing (OLTP) workload is known to produce intense random accesses with high ratio of write. Coping with the random access pattern has been a challenging issue to the underlying storage system. Although SSDs are considered as a breakthrough in storage systems, their random write performance still falls far behind the sequential performance. In this paper, we propose ...

We are witnessing a tremendous growth in the size of the data gathered, stored, and processed by various kinds of information systems. Therefore, no matter how big memories become, there is always the need to store data in secondary or even tertiary storage to facilitate access. Even if the data set can fit in main memory, there is still a need to organize data to enable efficient processing. I...