Storage
Overview
The cluster uses a Synology NAS as its primary shared storage. All nodes access the same files over NFS, so your data is available from any node.
There are also two additional NAS units located in the lab rooms (12F and 14F) at SNU Bldg 301.
NAS Hardware
| Item |
Spec |
| Model |
Synology RS1221RP+ |
| Expansion unit |
Synology RX418 |
| CPU |
AMD Ryzen V1500B (4 cores, 2.2 GHz) |
| RAM |
4 GB |
| Disks |
8x Toshiba MG08ACA16TE (14.9 TB each) |
| PSU |
Dual redundant |
| DSM version |
7.2.2 |
Network
| Interface |
Speed |
Role |
| bond0 (eth4 + eth5) |
20 Gbps (bonded) |
Primary — storage traffic to/from cluster nodes |
| eth0 |
1 Gbps |
Secondary LAN |
Storage Pools
Storage Pool 1 (Main)
- RAID type: RAID 10
- Drives: 4x 14.9 TB HDD
- Usable capacity: 29.1 TB
- Hot spares: 2x 14.9 TB HDD
Storage Pool 2
- RAID type: RAID 0
- Drives: 2x 14.9 TB HDD
- Usable capacity: ~29 TB
- Note: No redundancy (RAID 0)
Volumes
| Volume |
Pool |
Purpose |
Capacity |
| Volume 1 |
Pool 1 |
DSM system packages |
~960 GB |
| Volume 4 |
Pool 1 |
User home directories and data (/tml on nodes) |
27 TB (12 TB used) |
| Volume 5 |
Pool 1 |
Software repository (/nsource on nodes) |
~960 GB |
| Volume 3 |
Pool 2 |
Optional packages (/nopt on nodes) |
960 GB as mounted |
Shared Folders
| Share name |
Purpose |
tml |
Main user storage — home directories and project data |
nsource |
Software installation sources |
nopt |
Optional/additional software packages |
HyperBackup |
Backup data |
dsm_packages |
DSM system packages |
Other NAS Units
| NAS |
Location |
Connected to |
| nas.301-1212 |
SNU Bldg 301, 12F |
Cluster + 12F lab |
| nas.301-1415 |
SNU Bldg 301, 14F |
Cluster + 14F lab |
The 14F lab NAS is mounted on the head node as /nas.14f. The 12F lab NAS (/nas.12f) is currently not mounted.
Data Scrub Schedule
Automatic data scrub is scheduled quarterly to detect and repair silent data corruption. Last completed: 2026-03-05.