Description
HP P40503-B21 960GB SATA 2.5" SSD
The P40503-B21 is a 960GB SATA solid-state drive from HP, built in the 2.5-inch SFF size and running at 6Gb/s. What sets it apart in HP's range is the endurance class. This one carries a Mixed Use rating, which sits between read-intensive drives and write-intensive drives. That rating describes how much writing the drive is designed to absorb day after day, and it's the figure most server buyers check before anything else on the sheet.
Key Features
- 960GB of capacity in a single small form factor bay
- Mixed-use endurance rating, aimed at workloads that read and write in roughly equal measure
- SATA interface running at 6Gb/s
- 2.5-inch SFF body, sized for the drive bays in rack and tower servers
- HP part number P40503-B21, which counts when a support contract or a spares list ties you to HP-coded drives
- Solid-state build, so there's no spin-up delay and nothing mechanical to wear out
Performance and Applications
Endurance class decides where a drive belongs. Read-intensive models suit data written once and served many times over. Write-intensive models handle heavy logging and caching. Mixed Use sits between the two, which fits virtualisation hosts, database volumes, mail servers and busy file shares where traffic runs both ways all day. 960GB is a common size for those roles, big enough for real workloads and small enough that you can buy several and spread them across a RAID group.
Compatibility and Installation
You'll need a free 2.5-inch SFF bay and a SATA connection on the controller or backplane. HP servers use carrier trays matched to the chassis generation, so pair the drive with the right tray for your model. RAID controllers differ in how they handle SSDs, so check that your controller firmware is current before adding the drive.
HP P40503-B21 960GB SSD for Mixed Read and Write Server Workloads
For a server handling a steady mix of both, the P40503-B21 lands in the right endurance band at 960GB without pushing you up into write-intensive pricing.
