Parts/Storage/Distributed RAID 5 disk array
Storage · 1996
Distributed RAID 5 disk array
Direct-attached disks striped in RAID 5 across I/O units, the storage architecture that predates any parallel filesystem in this dataset.
Why this part
What every large machine used before a parallel filesystem existed to buy. CP-PACS held 529 GB across its I/O units in a RAID 5 configuration, no Lustre, no GPFS, both a decade away from existing as products. RAID 5 stripes data across disks with a rotating parity block, so a single drive failure costs no data, which was the entire point once a machine had enough disks that one failing during a run stopped being a rare event and started being a certainty. Every dedicated parallel filesystem part in this taxonomy exists to solve the problem this approach could not: letting thousands of compute nodes write to the same storage at once rather than one I/O node serving them in turn.
Systems using this part
- Systems
- 1
- Rmax underneath
- 368.2 GFlop/s
- Units recorded
- -
| System | Role | Country | Units | System Rmax | Supplied by | Rank |
|---|---|---|---|---|---|---|
| CP-PACS 1996-10 | Storage | Japan | - | 368.2 GFlop/s | Hitachi | #1 → |
“Units recorded” sums only the edges where a public source states a quantity. It is a floor, not a total, and should never be read as installed base.