Description
HP P40496-B21 240GB SATA 2.5" SSD
The P40496-B21 is HP's 240GB SATA drive in the 2.5-inch SFF size, running at 6Gb/s on triple-level cell flash and built to be hot-pluggable. The B21 on the end is worth understanding before you order. HPE uses that suffix for option kit part numbers, the codes you quote when adding hardware to a server. Spare part numbers for the same physical component look nothing like it, which is how two different codes can land you the same drive. This one is an internal part for server bays.
Key Features
- 240GB of capacity in a single 2.5-inch SFF body
- SATA interface running at 6Gb/s
- Triple-level cell flash, three bits held in every memory cell
- Hot-pluggable, so it comes out and goes back in with the chassis still powered
- B21 option kit coding, the format HP uses for add-on hardware
- HP part number P40496-B21, sized for SFF server bays
Performance and Applications
Boot drives get forgotten until the day one fails. A server builds its whole personality on that volume, and when it dies nobody can remember what the machine was carrying. Refreshing the boot pair across a rack during a planned window beats handling them one emergency at a time. At 240GB, these are cheap enough to buy by the dozen, and ordering them together means every server ends up running the same part with the same firmware behind it. That consistency saves hours when something eventually goes wrong.
Compatibility and Installation
You'll need a free 2.5-inch SFF bay, a SATA connection on the backplane or controller, and the carrier tray matched to your chassis generation. Mirror a pair so losing one drive doesn't take the host down with it. Hot-plug support means the swap itself happens without a shutdown.
HP P40496-B21 240GB SSD for Fleet-Wide Boot Drive Refreshes
For a rack of servers whose boot drives all went in on the same day, this is sized and priced to replace the lot. 240GB of hot-pluggable SATA flash under an HP option kit code.
