The Dell 400-AUWB (400-AUWB - Dell 900GB SAS 12Gb/s 15000RPM 256MB Cache 2.5-inch Hard Drive with Hybrid Tray) is a Server Hard Drive component engineered for sustained enterprise-class workloads. This part addresses common procurement scenarios where exact-match replacement, capacity expansion, or new-build deployment is required. Technical specifications include spindle speed of 15,000 RPM, form factor of 2.5-inch, interface of SAS, data rate of 12 Gb/s, cache of 256MB. Common deployment scenarios include database transaction-log volumes, virtualization datastores, OS-boot tier, backup-repository targets, and warm-data tiers in tiered-storage architectures. Pro Disk Network supplies the 400-AUWB 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-AUWB is a Dell server hard drive component with spindle speed 15,000 RPM, form factor 2.5-inch, interface SAS. Pricing on the 400-AUWB is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the 400-AUWB are shown on this page.
Trust Signals
US-based LLC — 7345 W Sand Lake Rd, STE 210, Office 3208, Orlando, FL 32819
Same-Day US Shipping — orders before 3pm ET ship today via UPS
30-Day Returns — pre-paid label on DOA and defective items
Quick Answer: Will the 400-AUWB work with my RAID controller?
The 400-AUWB 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-AUWB ship?
Pro Disk Network dispatches the 400-AUWB same-day on orders confirmed before 3 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
The 400-AUWB 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.
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-AUWB?
The 400-AUWB is a Dell enterprise-grade hard drive with spindle speed 15,000 RPM and form factor 2.5-inch, 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-AUWB
Pros
Free 30-day return window covers DOA + fit issues
Cons
Not recommended for OLTP databases above 50 TPS
Mechanical drive — expect 5–10W idle power per unit
3.5" form factor only — confirm caddy fit before ordering
Frequently Asked Questions about 400-AUWB
Is the 400-AUWB a genuine Dell part?
Yes. Pro Disk Network sources every 400-AUWB 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-AUWB work with my RAID controller?
The 400-AUWB 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-AUWB ship?
Pro Disk Network dispatches the 400-AUWB same-day on orders confirmed before 3 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
What is the warranty on the 400-AUWB?
New 400-AUWB 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-AUWB?
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-AUJH — Dell 400-AUJH 960GB Triple-Level Cell SAS 12Gb/s Read Intensive 2.5-Inch Solid State Drive with Tray for Compellent Scv2020/Scv3020/Scv4020 — $502.40
400-AULQ — 400-AULQ Dell 10TB 7200RPM SAS 12Gb/s 512E Hot-Pluggable 3.5-inch Hard Drive with Tray for Server — $310.40
400-AULX — 400-AULX - Dell 8TB 7200RPM SAS 12Gb/s 512E 3.5-inch Hard Drive with Tray for 14G PowerEdge Server — $408.77
400-AULZ — 400-AULZ - Dell 1TB 7200RPM SATA 6Gb/s Hot-Pluggable 3.5-inch Hard Drive — $229.91
400-AUMB — 400-AUMB - Dell 10TB 7200RPM SATA 6Gb/s 256MB Cache Hot-Pluggable 3.5-inch Hard Drive — $625.82
400-AUME — 400-AUME - Dell 2TB 7200RPM SATA 6Gb/s 3.5-inch Hard Drive — $293.93
400-AUMI — 400-AUMI - Dell 8TB 7200RPM SAS 12Gb/s 512E 3.5-inch Hard Drive with Tray for 14G PowerEdge Server — $500.31
400-AUMV — 400-AUMV - Dell 8TB 7200RPM SAS 12Gb/s 512E 3.5-inch Hard Drive with Tray for 14G PowerEdge Server — $399.87
400-AUMW — 400-AUMW - Dell 2TB 7200RPM SATA 6Gb/s 512N 3.5-inch Hard Drive with Tray for 14G PowerEdge Server — $300.00
400-AUNF — 400-AUNF - Dell 8TB SATA 6Gb/s 7200RPM 512e 3.5-inch Hard Drive for 14Gen PowerEdge Server — $454.40
400-AUNQ — 400-AUNQ - Dell 600GB 10000RPM SAS 12Gb/s 512n Hot-Pluggable 2.5-inch Hard Drive — $128.00
400-AUNS — 400-AUNS - Dell 1.92TB MLC SAS 12Gb/s Mix Use Hot-Pluggable 2.5-inch Solid State Drive — $4,388.00
Pro Disk Network Buyer’s Guide: Server Hard Drive
How to Pick the Right Drive Capacity for Your Use Case
If the 400-AUWB is going into a RAID array, choose RAID 6 over RAID 5 for any capacity tier built from drives larger than 4 TB. The probability of a second drive failing during rebuild from a 6+ TB rebuild window is high enough that single-parity is no longer responsible. For all-flash arrays, RAID 10 still wins on write-amplification-sensitive workloads (OLTP databases, VDI write-cache).
Drive Health Monitoring: SMART, Workload Rating, and Predictive Failure
Once the 400-AUWB is in production, the single most impactful operational practice is SMART monitoring tied to your existing alerting stack. SMART attributes 187 (reported uncorrectable errors), 197 (current pending sector count), and 198 (offline uncorrectable sector count) are the leading indicators of impending drive failure. Alert on non-zero values, not just on absolute thresholds; once these attributes leave zero, the drive has typically 30-90 days of useful life remaining.