ACM Transactions on Computer Systems (TOCS)
Parity declustering for continuous operation in redundant disk arrays
ASPLOS V Proceedings of the fifth international conference on Architectural support for programming languages and operating systems
The Performance of Parity Placements in Disk Arrays
IEEE Transactions on Computers
Parity logging overcoming the small write problem in redundant disk arrays
ISCA '93 Proceedings of the 20th annual international symposium on computer architecture
RAID: high-performance, reliable secondary storage
ACM Computing Surveys (CSUR)
The Zebra striped network file system
ACM Transactions on Computer Systems (TOCS)
Striping in a RAID level 5 disk array
Proceedings of the 1995 ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
An online video placement policy based on bandwidth to space ratio (BSR)
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
The HP AutoRAID hierarchical storage system
SOSP '95 Proceedings of the fifteenth ACM symposium on Operating systems principles
Serverless network file systems
SOSP '95 Proceedings of the fifteenth ACM symposium on Operating systems principles
Performance analysis of the RIO multimedia storage system with heterogeneous disk configurations
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
Maximizing performance in a striped disk array
ISCA '90 Proceedings of the 17th annual international symposium on Computer Architecture
A New Hierarchical Disk Architecture
IEEE Micro
A Detailed Simulation Model of the HP 97560 Disk Drive
A Detailed Simulation Model of the HP 97560 Disk Drive
Continuous media placement and scheduling in heterogeneous disk storage systems
Continuous media placement and scheduling in heterogeneous disk storage systems
A comparison of FFS disk allocation policies
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
Increasing the capacity of RAID5 by online gradual assimilation
SNAPI '04 Proceedings of the international workshop on Storage network architecture and parallel I/Os
Distributing Orthogonal Redundancy on Adaptive Disk Arrays
OTM '08 Proceedings of the OTM 2008 Confederated International Conferences, CoopIS, DOA, GADA, IS, and ODBASE 2008. Part I on On the Move to Meaningful Internet Systems:
Adaptive data block placement based on deterministic zones (adaptiveZ)
OTM'07 Proceedings of the 2007 OTM confederated international conference on On the move to meaningful internet systems: CoopIS, DOA, ODBASE, GADA, and IS - Volume Part II
HRaidTools: an on-line suite of simulation tools for heterogeneous RAID systems
Proceedings of the 3rd International ICST Conference on Simulation Tools and Techniques
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Disk arrays, or RAIDs, have become the solution to increase the capacity and bandwidth of most storage system, but their usage has some limitations because all the disks in the array have to be equal. Nowadays, assuming a homogeneous set of disks to build an array is becoming a not very realistic assumption in many environments, especially in low-cost clusters of workstations. It is difficult to find a disk with the same characteristics as the ones in the array and replacing or adding new disks breaks the homogeneity. In this paper, we propose two block-distribution algorithms (one for RAID0 and an extension for RAID5) that can be used to build disk arrays from a heterogeneous set of disks. We also show that arrays using this algorithm are able to serve many more disk requests per second than when blocks are distributed assuming that all disks have the lowest common speed, which is the solution currently being used.