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Spare kit arrived complete and restored service quickly.
Q8D40A
NS CS240G-X4 Controller/PS/HDD/SSD Spare Kit
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Q8D40A
NS CS240G-X4 Controller/PS/HDD/SSD Spare Kit
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Q8D40A is a high-performance NAS storage system featuring an 8-bay design that supports SATA HDD and SATA SSD drive types, delivering a total storage capacity of up to 256 TB. It offers RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10 configurations, and is powered by an Intel Xeon processor with 4 cores and 16 GB of pre-installed DDR4 memory upgradeable to 64 GB.
This storage appliance provides a robust array of interfaces including USB 3.0 and 10GbE Ethernet along with support for Fibre Channel in select configurations. It is designed with redundancy in mind through its redundant power supply (350W) and redundant fan cooling, and is ideal for use cases across SMB backup, enterprise data centers, virtualization, and media server deployments.
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When a leading financial services firm demands uninterrupted trading operations, the Q8D40A-NS CS240G-X4 Controller/PS/HDD/SSD Spare Kit enables hot-swappable replacement of failed controllers, power supplies and drives without a system reboot. This rapid on-site failover minimizes downtime to under 30 seconds, ensures 99.999% SLA compliance and protects revenue by sustaining continuous data access.
In hyperscale on-premises cloud deployments, scheduled maintenance windows can disrupt critical workloads. By staging the Q8D40A-NS CS240G-X4 Controller/PS/HDD/SSD Spare Kit onsite, IT teams perform predictive swaps of controllers, power supplies and HDD/SSD modules during live operations. This approach shortens maintenance windows by up to 50%, stabilizes performance and extends hardware lifecycle while safeguarding SLAs.
Telecom operators deploying edge micro-data centers at remote sites require field-replaceable hardware to maintain service quality. The compact Q8D40A-NS CS240G-X4 Controller/PS/HDD/SSD Spare Kit delivers all critical spares—storage controller, power supply and HDD/SSD modules—in one package, enabling technicians to swap components in under 15 minutes. This reduces MTTR by 70%, lowers service costs and sustains consistent edge performance.
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 Q8D40A |  Q8D42A |  Q8F81A |  Q8D41A |  Q8F04A | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | NAS | SAN | NAS | NAS | SAN |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 8-bay | 8-bay | 8-bay | 8-bay | 12-bay |
| Supported Drive Types | SATA HDD / SATA SSD | Mixed | SATA HDD / SATA SSD | Mixed | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 256 TB | 1 PB | 128 TB | 512 TB | 1 PB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon |
| CPU Cores | 4 | 8 | 8 | 4 | 8 |
| Installed RAM | 16 GB | 16 GB | 8 GB | 16 GB | 16 GB |
| Max RAM Capacity | 64 GB | 64 GB | 64 GB | 64 GB | 128 GB |
| RAM Type | DDR4 | ECC DDR4 | DDR4 | ECC DDR4 | ECC DDR4 |
| Network Ports | 10GbE | 10GbE | 1GbE | 10GbE | 10GbE |
| LAN Ports | 4 | 4 | 2 | 4 | 4 |
| USB Ports | USB 3.0 | USB 3.2 | USB 3.0 | USB 3.2 | USB 3.2 |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Redundant Fan | Redundant Fan | Redundant Fan | Redundant Fan | Redundant Fan |
| Power Supply | Redundant | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 350W | 500W | 350W | 350W | 500W |
| Operating System | Custom OS | Custom OS | Custom OS | Custom OS | Custom OS |
| Snapshot Support | Yes | Yes | Yes | Yes | Yes |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| Surveillance Support | No | No | No | No | No |
| Use Case | Enterprise Data Center | Enterprise Data Center | SMB / Enterprise Data Center / Virtualization / Media Server | Enterprise Data Center | Enterprise Data Center |
| Product Name | Q8D40A Storage Appliance | Q8D42A Enterprise Storage Array | Q8F81A Enterprise NAS | Q8D41A Storage System | Q8F04A Enterprise SAN Storage System |
| Height | 3.5 inches | 3.5 inches | 3.5 | 3 inches | 3.5 inches |
| Width | 17.3 inches | 17.5 inches | 17.5 | 17 inches | 17.5 inches |
| Depth | 27.6 inches | 25 inches | 27.5 | 28 inches | 27 inches |
| Weight | 22 lbs | 45 lbs | 25 lbs | 45 lbs | 35 lbs |
Spare kit arrived complete and restored service quickly.
Matched original hardware perfectly.
Reduced downtime significantly.
Essential spare for production systems.
Dependable OEM replacement kit.
The kit contains one NS CS240G-X4 controller module, two hot-swap power supply units, four enterprise HDDs, four enterprise SSDs, plus all required SAS cables and rack-mount hardware.
This spare kit is fully compatible with all NS CS240G-X4 and NS CS240G-X4 Gen2 storage arrays running supported firmware versions.
Power down the array, remove the failed controller, insert the spare module until it clicks, secure the retention latches, then power the system back on.
All drives are factory-tested but require array initialization; simply insert them into empty bays and follow the storage system’s drive provisioning wizard.