Xen and the art of virtualization
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
Cost-Efficient Memory Architecture Design of NAND Flash Memory Embedded Systems
ICCD '03 Proceedings of the 21st International Conference on Computer Design
A superblock-based flash translation layer for NAND flash memory
EMSOFT '06 Proceedings of the 6th ACM & IEEE International conference on Embedded software
Parallax: managing storage for a million machines
HOTOS'05 Proceedings of the 10th conference on Hot Topics in Operating Systems - Volume 10
Storage alternatives for mobile computers
OSDI '94 Proceedings of the 1st USENIX conference on Operating Systems Design and Implementation
Parallax: virtual disks for virtual machines
Proceedings of the 3rd ACM SIGOPS/EuroSys European Conference on Computer Systems 2008
Fast, inexpensive content-addressed storage in foundation
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
Gordon: using flash memory to build fast, power-efficient clusters for data-intensive applications
Proceedings of the 14th international conference on Architectural support for programming languages and operating systems
Proceedings of the 14th international conference on Architectural support for programming languages and operating systems
The five-minute rule 20 years later (and how flash memory changes the rules)
Communications of the ACM - Barbara Liskov: ACM's A.M. Turing Award Winner
Experiences with content addressable storage and virtual disks
WIOV'08 Proceedings of the First conference on I/O virtualization
Optimizing virtual machine live storage migration in heterogeneous storage environment
Proceedings of the 9th ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
Sirtio: Towards Scalable Virtual SSDs
Proceedings of the Second International Conference on Innovative Computing and Cloud Computing
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With the prevalence of multi-core processors and cloud computing, the server consolidation using virtualization has increasingly expanded its territory, and the degree of consolidation has also become higher. As a large number of virtual machines individually require their own disks, the storage capacity of a data center could be exceeded. To address this problem, copy-on-write storage systems allow virtual machines to initially share a template disk image. This paper proposes a hybrid copy-on-write storage system that combines solid-state disks and hard disk drives for consolidated environments. In order to take advantage of both devices, the proposed scheme places a read-only template disk image on a solid-state disk, while write operations are isolated to the hard disk drive. In this hybrid architecture, the disk I/O performance benefits from the fast read access of the solid-state disk, especially for random reads, precluding write operations from the degrading flash memory performance. We show that the hybrid virtual disk, in terms of performance and cost, is more effective than the pure copy-on-write disks for a highly consolidated system.