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2U JBOD or flash expansion shelf

Host less expansion shelf in 2U with 24 NVMe bays over PCIe Gen5 or 24 SAS bays and dual redundant I/O modules, for growing storage without another host.

Illustration of a 2U rackmount server
Drives
24 x 2.5 inch bays, E3.S or U.2 NVMe, or SAS and SATA in the JBOD variant
Connectivity
NVMe: PCIe Gen5 over MCIO cables; JBOD: 4 x 24 Gb/s SAS wide ports
Redundancy
Dual hot swap I/O modules, dual power supplies, redundant fans
Capacity
Up to 737 TB raw NVMe or 368 TB SAS flash per shelf
Daisy chain
Multiple shelves per host, cascaded
Power
About 0.6 kW per shelf planning figure

Overview

An expansion shelf adds drive bays to an existing storage server without adding a second host, which keeps the storage software simple and the cost per bay low. The NVMe variant presents 24 E3.S or U.2 drives to the host over PCIe Gen5 cables, and the JBOD variant presents 24 SAS or SATA drives over 24 Gb/s SAS with cascade ports for several shelves in a chain.

It is used to grow the capacity of the 2U and 4U storage servers, to build a large flash pool behind a single pair of high availability heads, and to give a GPU server a local dataset far larger than its internal bays. Dual I/O modules, dual power supplies and redundant fans keep the shelf serviceable without downtime.

We quote the shelf with the matching host adapter, cables and drives so that it arrives as a working set. Plan for about 0.6 kW per fully populated shelf. The enclosure reports drive and environmental status to the host over SES.

Use cases

  • Growing storage servers
  • Large flash pools behind HA heads
  • Local datasets for GPU servers
  • Backup and archive expansion

Specifications

Storage
Drive bays24 x 2.5 inch hot swap, E3.S or U.2 NVMe, or 24 x SAS or SATA SSD
CapacityUp to 737 TB raw with 30.72 TB NVMe drives
Enclosure managementSES over the I/O modules, drive locate and fault LEDs
Connectivity
NVMe shelfPCIe Gen5 x16 per I/O module via MCIO cables to the host or PCIe switch adapter
JBOD shelf4 x 24 Gb/s SAS wide ports per I/O module, cascade ports for daisy chaining
Host adaptersPCIe retimer or switch card for NVMe, SAS HBA for JBOD, supplied with the shelf
Physical
Form factor2U rackmount, air cooled, no CPU or memory
Power suppliesRedundant 1,200 W class PSUs, 100 to 240 V input
Planning powerAbout 0.6 kW per shelf fully populated
CablingMCIO or SAS cables to 2 m included

Figures describe the system class. Exact configuration, weights and power draw are confirmed on the quotation.

What's included

  • Rails and power cords
  • Host adapter card and cables to 2 m
  • Burn in with all bays populated and acceptance report
  • 3 year warranty, options to 5 years

Compliance

This product is not a data center GPU system and does not require NVIDIA end user registration. Standard export documentation applies. Read about export compliance.

Compare it with the next class up or down

The nearest classes we quote are the 2U 24 bay all NVMe storage server and the 4U 36 bay HDD storage server. If neither is quite right, tell us the workload and we specify the system between them.

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