| Talagala, N. Asami, S. Patterson, D. Anderson, T. Tertiary Disk: Large Scale Distributed Storage. University of California at Berkeley, February 1997. Available at (http://now.cs.berkeley.edu/Td/papers/). |
....for supporting parallel disk I O with multiple controllers. Our paper deals with distributed RAID architectures. Distributed RAID concept was explored by Stonebraker and Schloss [27] Prototyping of distributed RAIDs started with the Petal project [19] at Digital Lab and the Tertiary Disk project [28] at UC Berkeley. This paper reports the architecture and performance of a new distributed RAID x system, built at the USC Trojans cluster project. The level x in RAID x is yet to be assigned by the RAID Advisory Board [24] To build a distributed RAID, one must establish three capabilities: i) a ....
....and applications, and (iii) local and remote disk I O operations performed with comparable latency. These requirements Table 1 Research Projects on Parallel and Distributed RAIDs System Attributes USC RAID x [15] Princeton TickerTAIP [4] Digital Petal [19] 29] Berkeley Tertiary Disk [28] RAID architecture environment Orthogonal striping and mirroring over a Linux cluster RAID 5 with multiple controllers as a centralized subsystem Chained declustering in an Unix cluster A RAID 5 built with a Solaris PC cluster Enabling mechanism for SIOS Cooperative device drivers in Linux kernel ....
N. Talagala, S. Asami, D. Patterson, and K. Lutz, "Tertiary Disk: Large Scale Distributed Storage", UCB Technical Report No. UCB//CSD-98-989 .
....characterized below: 2.1 Disks Distributed over Cluster Nodes This disk array architecture is built with independent disks attached to PC or workstation hosts, called cluster nodes, in a cluster of computers. The RADD (redundant arrays of distributed disks) 37] tertiary disk built at Berkeley [38], Digital s Petal project [28] Swarm scalable storage system [15] and the RAID x at USC [16] are all belonging to this category. Each cluster node accesses its attached disk on behalf of its client. Figure 1 shows a typical configuration of such a distributed RAID 5 architecture. The data layout ....
N. Talagala, S. Asami, D. Patterson, and K. Lutz, "Tertiary Disk: Large Scale Distributed Storage", UCB Technical Report No. UCB//CSD-98-989.
....of clustering commodity disk drives together for reliable, larger scale storage. Future trends in commodity usage will include moving away from RAIDs as they currently exist (the host computer is the throughput bottleneck) toward a fully distributed system similar to what is called tertiary disks [Talagala et al. 1998]: a 3TB system where many 8GB disks (370) are managed by 20 PCs, allowing greater capability for parallel access and reliability (See Serverless Filesystems [Anderson et al. 1998] Cheaper disks made RAID possible, cheaper computers will make tertiary disks possible. A reasonable and ....
Talagala, N., Asami, S., Anderson, T., Patterson, D., "Tertiary Disk: Large Scale Distributed Storage," Technical Report UCB-CSD-98-989, 1998.
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Talagala, N. Asami, S. Patterson, D. Anderson, T. Tertiary Disk: Large Scale Distributed Storage. University of California at Berkeley, February 1997. Available at (http://now.cs.berkeley.edu/Td/papers/).
....forwards the request to a storage server with a copy of the image. From then on, all image data transfer occurs between the storage server and the client. The storage servers are PCs with 8GB, 7200RPM SCSI drives. We do not describe the storage system in detail here; a description is available in [10]. Note: We have two front ends because the database and the storage server portions of the site are at different geographical locations. The second front end eases management by creating a level of indirection between the search engine and the storage servers. This way, we are able to reconfigure ....
Talagala, N. Asami, S. Anderson T, Patterson, D. Tertiary Disk: Large Scale Distributed Storage. UC Berkeley Technical Report UCB CSD 98-989.
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