Dell part number 400-ACFK identifies the 400-ACFK - Dell 900GB 10000RPM SAS 6Gb/s 2.5-inch Hard Drive, an enterprise-grade Server Hard Drive unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include capacity of 900 GB, spindle speed of 10,000 RPM, form factor of 2.5-inch, interface of SAS, data rate of 6 Gb/s. Typical workloads include VMware ESXi datastores, Veeam / Rubrik / Cohesity backup repositories, RDBMS data files (SQL Server, PostgreSQL, Oracle), and log-tier storage for Splunk and Elastic. Pro Disk Network supplies the 400-ACFK to US business buyers. Stocked units ship same-day on in-stock orders placed before 3pm ET. Pro Disk Network applies a 90-day functional warranty. Free US ground shipping on orders over $150; same-day expedited (UPS Next Day Air, FedEx Priority) available at checkout.
The 400-ACFK is a Dell server hard drive component with capacity 900 GB, spindle speed 10,000 RPM, form factor 2.5-inch. Pricing on the 400-ACFK is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.
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Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the 400-ACFK are shown on this page.
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Quick Answer: Will the 400-ACFK work with my RAID controller?
The 400-ACFK operates with any standard SAS/SATA/NVMe-compatible RAID controller (Dell PERC, HPE Smart Array, LSI/Broadcom MegaRAID, Adaptec, IBM ServeRAID, Lenovo ThinkSystem RAID). Mixing this drive in the same RAID volume with drives of different speed/capacity is supported but never recommended.
How fast does the 400-ACFK ship?
400-ACFK orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
The 400-ACFK is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
Veeam Backup Repository — Cost-optimised backup target for Veeam B&R, Rubrik, or Cohesity primary backup tier. RAID 6 over 8–24 drives delivers 100+ TB usable per server.
Splunk Warm/Cold Tier — Appropriate for Splunk warm/cold/frozen indexes where ingest write rates are below 200 MB/s per node. Avoid for hot-tier indexes — use NVMe instead.
File Server / SMB Shares — General-purpose Windows Server / Samba shares for departmental file storage. RAID 5 for capacity, RAID 10 for IOPS-sensitive workloads.
Object Storage (Ceph / MinIO) — JBOD presentation behind Ceph OSDs or MinIO erasure-coded pools. Mix with NVMe metadata drives for production object stores.
What is the 400-ACFK?
The 400-ACFK is a Dell enterprise-grade hard drive with capacity 900 GB and spindle speed 10,000 RPM, manufactured by Dell. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with same-day dispatch on orders placed before 3 PM ET, backed by a 30-day return guarantee.
Pros & Cons of 400-ACFK
Pros
Direct-to-rack shipping on multi-pack orders
Sequential serial-number bundling for cluster builds
Cons
Refurbished tier reseals — original retail box not included
Single-drive purchases ship in static-shield bags, not retail packaging
Lead time on 24+ drive orders may extend 2–4 business days
Frequently Asked Questions about 400-ACFK
Is the 400-ACFK a genuine Dell part?
Yes. Pro Disk Network sources every 400-ACFK as factory-original Dell inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Dell servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Will the 400-ACFK work with my RAID controller?
The 400-ACFK operates with any standard SAS/SATA/NVMe-compatible RAID controller (Dell PERC, HPE Smart Array, LSI/Broadcom MegaRAID, Adaptec, IBM ServeRAID, Lenovo ThinkSystem RAID). Mixing this drive in the same RAID volume with drives of different speed/capacity is supported but never recommended.
How fast does the 400-ACFK ship?
400-ACFK orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
What is the warranty on the 400-ACFK?
New 400-ACFK units carry the full Dell manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the 400-ACFK?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the 400 series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
400-ACBU — 400-ACBU - Dell 2TB 7200RPM SAS 12Gb/s 3.5-inch NL 512N Hard Drive Gen. 13 with Tray — $306.19
400-ACCJ — 400-ACCJ - Dell 3TB 7200RPM SAS 6Gb/s Hot-Swappable 3.5-inch Nearline Hard Drive — $202.37
400-ACCL — 400-ACCL - Dell 4TB 7200RPM SAS 6Gb/s 3.5-inch Hard Drive Gen. 13 with Tray — $377.16
400-ACCM — 400-ACCM - Dell 2TB 7200RPM SAS 12Gb/s 3.5-inch NL 512N Hard Drive Gen. 13 with Tray — $443.06
400-ACDD — 400-ACDD - Dell 900GB 10000RPM SAS 6Gb/s 64MB Cache 2.5-inch SED Hard Drive with Tray — $504.96
400-ACDG — 400-ACDG - Dell 500GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive — $142.23
400-ACDJ — 400-ACDJ - Dell 1TB 7200RPM SATA 6Gb/s 3.5-inch Hard Drive — $301.52
400-ACDU — 400-ACDU - Dell 1.2TB 10000RPM SAS 6Gb/s 64MB Cache 2.5-inch Hard Drive with Tray — $214.41
400-ACDV — 400-ACDV - Dell Equallogic 1.2TB 2.5-inch 6GB/s 10000RPM HS SAS Hard Drive — $459.71
400-ACEJ — 400-ACEJ - Dell 200GB MLC Read Intensive SATA Solid State Drive — $422.04
400-ACEN — 400-ACEN - Dell 500GB 7200RPM SATA 6Gb/s 2.5-inch Hard Drive — $223.70
400-ACEQ — 400-ACEQ - Dell 1.2TB 10000RPM SAS 6Gb/s 2.5-inch Hard Drive — $358.16
Pro Disk Network Buyer’s Guide: Server Hard Drive
How to Pick the Right Drive Capacity for Your Use Case
For VMware vSAN deployments, the 400-ACFK is best deployed in the capacity tier with NVMe cache drives in front. Size the cache layer at 10% of usable capacity for write-intensive workloads and 5% for read-leaning workloads. For Veeam backup repositories, plan around 1.5× the size of your protected estate to allow for incremental forever chains plus synthetic fulls. Splunk warm tier sizing should follow the daily ingest rate × retention days × 1.6 compression overhead.
Drive Health Monitoring: SMART, Workload Rating, and Predictive Failure
For VMware ESXi 8 hosts, enable vSphere's predictive-failure analysis on the 400-ACFK via the host's storage device list. The host queries SMART on a regular cadence and surfaces yellow/red warnings in vCenter before the drive fails outright. On Linux, use smartctl piped to your monitoring system; on Windows Server, Storage Spaces exposes health state directly in Server Manager.