Write-Combined Logging: An Optimized Logging for Consistency in NVRAM

Table 1

Comparison between PCM and DRAM [4, 7].

	DRAM	PCM
Read	60 ns	100–300 ns (present); 50–85 ns (future)
Write	60 ns	10–150 us (present); 150–1000 ns (future)
Density	7	4
Endurance
Nonvolatility	N	Y
Byte-addressable	Y	Y