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Cephyr

Last update: 2026-05-21

Cephyr is a storage system running Ceph for managing filesystem, block storage and object storage.

Currently Ceph manage two group of hardware:

Mimer server

Group 1:

  • 14 Lenovo SR630v2 servers with:
    • 2 x Intel Xeon Silver 4314 16c 2.3GHz Processors, 256 GB memory
    • 2 x M.2 5300 480GB SSD (Mirrored for OS)
    • 3 x 800GB NVMe PCIe 4.0 (for Ceph journal and database)
    • 1 x Mellanox ConnectX-6 100 Gb 2-port Ethernet adapter
    • 1 x Mellanox ConnectX-6 10/25 Gb 2-Port Ethernet adapter
  • 7 Lenovo D3284 JBOD with 84x 14TB SAS HDD Drives
  • Two servers connect to one JBOD
  • A total of 8232 TB raw / 6860 TB usable capacity (shared with the Mimer Bulk tier)

Mimer JBOD

Group 2:

  • 12 Lenovo SR630v2 servers with:
    • 2 x Intel Xeon Gold 6326 16c 2.9GHz Processor, 384 GB memory
    • 2 x M.2 480GB SSD For OS
    • 10 x Intel SSDPF2KX153T1O 15.36TB NVMe PCIe 4.0
    • 2 x Mellanox ConnectX-6 Dx 2x100 Gb Ethernet adapters
    • A total of 1843 TB raw / 1474 TB usable capacity

Applying for project storage

As of 2026-07-01 Cephyr is no longer part of NAISS and you can not freely apply for storage as before.

If you need storage for your project on Vera, then your options are:

  1. Purchase storage
  2. Department storage allocation
    • The e-Commons steering group decides on department allocations every year and all departments are informed of this.
    • Departments decide themselves how they wish to split up their storage between their research groups.
    • Contact your line manager or department head for details.

Contact C3SE support if you have questions.

Note: For center storage projects on Cephyr NOBACKUP, a compute project on e-Commons compute clusters is always a requirement to access the storage.

Note 2: You can also have Object storage (Amazon S3 compatible), this is accessible world-wide and can be used for for example data gathering. See Cephyr-S3

Project Storage Decommissioning

See Parent Page