is this a valid use of memset?

[Dave C]

This is some code I've inherited in a project that I need to modify - the original was done in Borland C++ 3.1 in the DOS days. I don't use memset, so I'm wondering if this is valid. The point of it is to initialize the contents of an array of structures to zero:

struct hsdata
{
	unsigned long wgpin;
	unsigned long pxpin;
	unsigned long iclasspin;
	char iclass_csn[21];
	unsigned int hsindex;
};

void some_function()
{
	struct hsdata hs_unsorted[2400]; // array of structures
	int z;

	// Clear hsdata structure
	for(z = 0; z < 2400; z++)
	{
		memset(&hs_unsorted[z],0,sizeof(hsdata));
	}
}

Is this an OK thing to do?

Thanks