The best replacement for ssd is hdd.

The best alternatives to ssd are rated as following:
★★★★★  hdd
★★★★  sata
★★★  ssi
★★★  hard drive
★★  flash
★  sshd
★  hybrid
★  ram
★  raptor
★  hdd speed
★  velociraptor
★  flash storage
★  sas
★  hdd performance
★  raid
★  raid 0
★  hdd comparison
★  flash drive
★  more ram
★  hd
★  hdd gaming
  7200rpm
  hdd power consumption
  hdd lifespan
  msata
  hdd reliability
  7200 rpm drive
  7200 rpm
  hybrid drive
  fusion drive
  hard drive speed
  hdd performance comparison
  hdd mac
  hdd benchmark
  hard disk
  ssdi
  sad
  hhd
  hdd macbook pro
  emmc
  scsi
  7200
  normal hdd
  sata hard drive
  7200rpm hdd

Your alternative for ssd is not listed? Suggest!
Speaking about ssd, one probably shouldn't forget about hdd.

Other search terms related to ssd and their ratings are:
★★★★★ hdd
★★★★ windows 7
★★★★ windows xp
★★★ ahci
★★★ xp
★★ sandforce
★★ sata 2
★★ reinstalling windows
★ hdd raid
★ sata 1
★ ubuntu
vista
bsod
linux
raid
sata 3
sandforce controller
sata ii
You have in mind a companion for ssd and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ssd in all years. Click on graph for more.
ssd
hdd
sata