Following a recent post on cost of HD vs SSD, I checked the current cost, taking into account the high energy costs that we currently pay.
I took SHR 3x2TB for SSD and HDD for people like me that use max 3TB of disk space.
I compare WD red Pro 2TB vs MX500 2TB SSD Amazon price by today, electricity costs by today in Europe.
WD RED Pro
3 x 2TB hard disk: 3* 106 euro = 318 euro for the 3 disks / 5 year lifetime = 63 euro/year on disks
electricity: 3 disks * 6 watt * 24h *365 Days /1000 * 0.5 euro/kWh = 78 euro/year
Total HD cost 63+78 = 141 euro/3 disks/year.
SSD
3x MX500 2TB; 3*170 euro = 510 euro / 6 years lifetime (MTBF is almost twice as high as HD, I will add 1 year of lifetime) = 85euro/year on disks.
electricity: 3disks * 0.5watt * 24h*365days /1000 *0.5 euro/kwh = 7euro/y
Total SSD cost 85+7= 92 euro/3 disks/year
For sure with bigger disks the SSD costs are not competitive, but I was surprised that electricity has such a big impact on disk running costs.
Also regular WD red have lower price and electricity cost is about half of the Pro, but still you will notice that electricity costs really impact the running costs of disks a lot at the moment.
Another reason to switch off the nas at night
I took SHR 3x2TB for SSD and HDD for people like me that use max 3TB of disk space.
I compare WD red Pro 2TB vs MX500 2TB SSD Amazon price by today, electricity costs by today in Europe.
WD RED Pro
3 x 2TB hard disk: 3* 106 euro = 318 euro for the 3 disks / 5 year lifetime = 63 euro/year on disks
electricity: 3 disks * 6 watt * 24h *365 Days /1000 * 0.5 euro/kWh = 78 euro/year
Total HD cost 63+78 = 141 euro/3 disks/year.
SSD
3x MX500 2TB; 3*170 euro = 510 euro / 6 years lifetime (MTBF is almost twice as high as HD, I will add 1 year of lifetime) = 85euro/year on disks.
electricity: 3disks * 0.5watt * 24h*365days /1000 *0.5 euro/kwh = 7euro/y
Total SSD cost 85+7= 92 euro/3 disks/year
For sure with bigger disks the SSD costs are not competitive, but I was surprised that electricity has such a big impact on disk running costs.
Also regular WD red have lower price and electricity cost is about half of the Pro, but still you will notice that electricity costs really impact the running costs of disks a lot at the moment.
Another reason to switch off the nas at night