Storage Devices, Local File System and Crossbar Network File System Characteristics, and 1 Terabyte

Storage Devices, Local File System and Crossbar Network File System Characteristics, and 1 Terabyte File IO Benchmark *on the “Numerical Simulator III” Naoyuki FUJITA Hirofumi OOKAWA fujita@nal.go.jp ookawa@nal.go.jp National Aerospace Laboratory of Japan * recognized that the RAID device on CeMSS is optimized Abstract at two (2) Megabytes IO size, the LTO drive on CeMSS is optimized at 128+ Kilobytes IO size, the local file system We benchmarked a mass storage system named performs at about three to four (3 to 4) Gigabytes per “CeMSS” on the “Numerical Simulator III” System. It second with eighty-way disks, and the crossbar network has eighty (80) RAID-5 disk arrays and forty (40) LTO file system performs at about one point six (1.6) Gigabytes tape drives, as a storage devices, and has an HSM based per second with eighty-way disks. Set to the above local file system and crossbar network file system. We conditions CeMSS can write/read a one (1) Terabyte file also described CeMSS design outline. In order to clear within 10 minuets. our benchmark perspective we defined “Standard IO Characteristic” and “User IO Pattern”. We recognized that the disk and tape devices of CeMSS are optimized at 2. “Numerical Simulator III” Mass Storage 2[MB] and 128+[KB] IO size. Using 16-way disks, user System application programs can use over 1[GB/s] IO throughput on the NS-III. And under 80-way disk At the National Aerospace Laboratory of Japan condition, ...