Western Digital on Tuesday (27/04) announced availability of its WD Purple QD101 line of ultra-endurance microSDXC cards for use as internal storage in surveillance devices, such as smart security cameras. The card implements 96-layer 3D TLC NAND flash memory, is capable of 500 P/E cycles, and 256 TBW for its top of the line 512 GB variant. The card is particularly useful as a failsafe storage device for cameras in case their link to the NVR server is severed, and is rated for 24x7 operation. The card comes in capacities of 32 GB, 64 GB, 128 GB, 256 GB, and 512 GB. The card is now shipping to NVR and smart camera manufacturers.