HP
HP 431935-B21 72GB 15000 RPM SAS 2.5" laptop hard drive
A 2.5-inch SAS laptop drive delivering 72GB at 15000 RPM for high-throughput workloads
- InterfaceSAS 3Gb/s
- Capacity72GB
- RPM15000 RPM
- FeaturesSerial Attached SCSI is the logical evolution of SCSI, inclu
- Form Factor2.5"
- 15000 RPM spindle delivers fast transactional throughput
- SAS 3Gb/s interface provides reliable enterprise connectivity
- 72 GB capacity supports mission-critical storage growth
- 5 inch form factor fits space-constrained server bays
- Hot-plug tray enables drive replacement without system downtime
Mission-critical storage drive
The HP 431935-B21 is a 72GB 2.5-inch internal hard drive built for servers and workstations that demand consistent uptime. Its 15000 RPM spindle speed targets transactional workloads where low latency matters more than raw capacity. The SAS interface supports hot-plug installation in compatible bays.
SAS 3Gb/s interface ceiling
The 3Gb/s SAS link caps sustained throughput well below modern solid-state alternatives, so sequential transfers will saturate the bus before the platters do. Single-port operation removes multipath redundancy, limiting failover options in high-availability clusters. Cable length and backplane topology impose additional distance constraints.
72GB capacity envelope
Seventy-two gigabytes suits operating-system volumes, database logs or scratch space that benefit from spindle speed rather than bulk capacity. Heavy media libraries, virtualisation images or long-term archives will exhaust the address space quickly, requiring additional drives or a migration to larger-form-factor media.
Highlights
- 15000 RPM spindle delivers fast transactional throughput
- SAS 3Gb/s interface provides reliable enterprise connectivity
- 72 GB capacity supports mission-critical storage growth
- 5 inch form factor fits space-constrained server bays
- Hot-plug tray enables drive replacement without system downtime
Specifications
| Brand | HP |
|---|---|
| Model | 431935-B21 |
| Interface | SAS 3Gb/s |
| Capacity | 72GB |
| RPM | 15000 RPM |
| Features | Serial Attached SCSI is the logical evolution of SCSI, including its long-established software advantage and the Serial ATA electrical and physical connection interface. SAS meets all these demands while providing the highest performance. |
| Form Factor | 2.5" |
| Shipping weight | 1.81 kg |
| Package size | 234 × 180 × 132 mm |
Questions about this item
Should I choose the 72GB 15000 RPM SAS drive or a lower-speed alternative for my server?
The 72GB capacity and 15000 RPM spindle suit transactional applications that demand high throughput and low latency.
What does the 15000 RPM figure mean for real-world performance in a laptop?
A 15000 RPM spindle reduces rotational latency, boosting random I/O speed for mission-critical and performance-oriented workloads.
How does the SAS 3Gb/s interface limit transfer rates in practice?
The SAS 3Gb/s link caps the maximum theoretical throughput at 3 gigabits per second, which bounds sustained read and write speeds.
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