General
Commands
Device info: Try: sudo smartctl -d megaraid,0 -a /dev/sdX where sdX is the device name. (worked in Ramanujan) Else Try: sudo smartctl -i /dev/sdX where sdX is the device name. (worked in Sustain) For NAS: Checked in GUI
Device partitions: Try: lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL,MODEL to list all partitions.
Filesystems
| Server | Device Model | Type | Rotation rate (rpm) | SATA version | Speed | Capacity |
|---|---|---|---|---|---|---|
| Ramanujan | INTEL SSDSC2KB076T8 | SSD | - | SATA 3.2 | 6 Gb/s | 7.68 TB |
| Sustain (Samsung) | Samsung SSD 860 EVO 250GB | SSD | - | SATA 3.2 | 6 Gb/s | 250 GB |
| Sustain (Seagate) | Seagate ST1000NM0008-2F2100 | HDD | 7200 | SATA 3.1 | 6 Gb/s | 1 TB |
| NAS | Seagate ST18000NM000J-2TV103 | HDD | 7200 | SATA but not checked version | 6 Gb/s | 16.37 TB |
1000 Images Test
Unzip
Time taken to unzip 1000 images.
| Server | Time (s) | Comment |
|---|---|---|
| Ramanujan | 12.9 | |
| Sustain (Samsung) | 12.0 | |
| Sustain (Seagate) | 12.4 | |
| NAS (direct ssh) | 12.8 | |
| NAS (mounted on Ramanujan) | 54.1 | Tested with sudo su as well to make sure sudo isn’t causing the problem |
Transfer the 2.1 GB zip file from Server to NAS
19.8 seconds (~ 108 MB/s)