Title :
Using a Gigabit Ethernet cluster as a distributed disk array with multiple fault tolerance
Author :
Marco, Alessandro Di ; Chiola, Giovanni ; Ciaccio, Giuseppe
Author_Institution :
DISI, Genova Univ., Italy
Abstract :
A cluster of PCs can be seen as a collection of networked low cost disks; such a collection can be operated by proper software so as to provide the abstraction of a single, larger block device. By adding suitable data redundancy, such a disk collection as a whole could act as single, highly fault tolerant, distributed RAID device, providing capacity and reliability along with the convenient price/performance typical of commodity clusters. We report about the design and performance of DRAID, a distributed RAID prototype running on a Gigabit Ethernet cluster of PCs. DRAID offers storage services under a single I/O space (SIOS) block device abstraction. The SIOS feature implies that the storage space is accessible by each of the stations in the cluster, rather than throughout one or few end-points, with a potentially higher aggregate I/O bandwidth and better suitability to parallel I/O.
Keywords :
RAID; distributed processing; fault tolerant computing; redundancy; workstation clusters; Gigabit Ethernet cluster; data redundancy; distributed RAID device; distributed disk array; fault tolerance; storage services; Aggregates; Costs; Ethernet networks; Fault tolerance; Hard disks; Personal communication networks; Prototypes; Redundancy; Space stations; Workstations;
Conference_Titel :
Local Computer Networks, 2003. LCN '03. Proceedings. 28th Annual IEEE International Conference on
Print_ISBN :
0-7695-2037-5
DOI :
10.1109/LCN.2003.1243187