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Cache upgrade improved read performance across shared workloads.
Q8D19A
NS CS 640GB Cache Fld Upgrade
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Q8D19A
NS CS 640GB Cache Fld Upgrade
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Q8D19A is a SAN storage system featuring an 8-bay configuration that supports a mixed array of drive types including SATA HDD, SAS HDD, SATA SSD, and NVMe SSD, with a total storage capacity of 512 TB. It is powered by an Intel Xeon processor with 8 cores, comes with 16 GB of pre-installed ECC DDR4 RAM that can scale up to 64 GB, and offers diverse connectivity via USB 3.2, Thunderbolt, Ethernet, and Fibre Channel interfaces along with robust network support including 10GbE and 4 LAN ports.
Q8D19A supports advanced RAID levels including RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, and RAID 60, and is designed with redundant power supplies rated at 350W and a redundant fan cooling system for high-reliability operations. Ideal for SMB backup, enterprise data centers, virtualization, and media server deployments, this storage system also offers expansion support for increased scalability in demanding environments.
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A global investment bank running high-frequency trading applications integrates the Q8D19A-NS CS 640GB Cache Fld Upgrade into its SAN to absorb write bursts and serve critical queries in microseconds. By offloading hot blocks to 640 GB of NVMe flash cache, the platform reduces end-to-end latency by up to 70%, ensures sub-millisecond trade execution, and maintains compliance with SLAs for market-making operations.
A Fortune 500 company supporting 5,000+ virtual desktops deploys the Q8D19A-NS CS 640GB Cache Fld Upgrade on its HP ProLiant storage arrays to eliminate boot storms and login delays. The integrated flash cache accelerates IOPS-intensive peaks, delivering 3× faster desktop provisioning, boosting end-user productivity by 40%, and lowering overall TCO through deferred spindle expansion.
An online retailer processes petabytes of customer clickstream and sales metrics with a Hadoop-based data warehouse. Integrating the Q8D19A-NS CS 640GB Cache Fld Upgrade as a front-end cache tier boosts sustained throughput by 2.5× for ETL jobs, truncates nightly analytics windows by 60%, and accelerates insights into purchasing trends—driving faster pricing decisions and targeted marketing campaigns.
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 Q8D19A |  Q8B65A |  Q8D35A |  Q8D74A |  Q8F70A | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | SAN | SAN | SAN | SAN | NAS |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 8-bay | 8-bay | 24-bay | 24-bay | 12-bay |
| Supported Drive Types | Mixed | Mixed | Mixed | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 512 TB | 512 TB | 1 PB | 1 PB | 256 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 | 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 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon |
| CPU Cores | 8 | 8 | 8 | 8 | 8 |
| Installed RAM | 16 GB | 16 GB | 16 GB | 16 GB | 8 GB |
| Max RAM Capacity | 64 GB | 128 GB | 128 GB | 64 GB | 128 GB |
| RAM Type | ECC DDR4 | DDR4 | ECC DDR4 | ECC DDR4 | DDR4 |
| Network Ports | 10GbE | 10GbE | 10GbE | 10GbE | 10GbE |
| LAN Ports | 4 | 4 | 4 | 2 | 2 |
| USB Ports | USB 3.2 | USB 3.2 | USB 3.2 | 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 | 750W | 500W | 350W |
| 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 | Yes | No | Yes | No |
| Use Case | SMB / Enterprise Data Center / Virtualization / Media Server | SMB / Enterprise Data Center / Virtualization / Media Server | Enterprise Data Center | Enterprise Data Center | Enterprise Data Center |
| Product Name | Q8D19A Enterprise Storage Array | Q8B65A Enterprise Storage System | Q8D35A Enterprise Storage Array | Q8D74A Enterprise SAN Storage | Q8F70A Enterprise NAS Storage System |
| Height | 3 inches | 3 inches | 3.5 inches | 4 inches | 3 inches |
| Width | 17 inches | 17 inches | 17.5 inches | 17 inches | 17 inches |
| Depth | 28 inches | 25 inches | 28.0 inches | 28 inches | 28 inches |
| Weight | 45 lbs | 45 lbs | 45 lbs | 45 lbs | 35 lbs |
Cache upgrade improved read performance across shared workloads.
Easy to deploy with clear documentation.
Consistent improvement under sustained load.
Works well for capacity constrained systems.
Solid incremental performance upgrade.
The NS CS 640GB Cache Field Upgrade (SKU Q8D19A) is a factory-tested flash cache expansion kit that adds 640 GB of high-performance cache to supported Nimble Storage CS Series arrays.
By adding 640 GB of low-latency flash cache, the upgrade accelerates read operations, reduces I/O latency and increases overall IOPS, delivering faster application response times.
The Q8D19A upgrade is compatible with Nimble Storage CS200, CS300, CS500 and CS700 Series arrays running NimbleOS 5.0 or later.
No, the upgrade is designed for field installation by an experienced storage administrator following the provided instructions and requires no specialized tools.