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price-trends: add sale-frequency data (how often drives discount)

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Per-model and weekly computed figures: how often each current 8TB+ drive
goes on sale (best price 5%+ below its own rolling-median baseline) and how
deep. NAS lines discount several times more often than enterprise; similar
depth. Computed values only, compiled from Amazon price history.
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deeddy 2026-09-16 23:32:27 +02:00
parent b73e01e1d3
commit df733199b4
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price-trends/sale-frequency-by-model.csv Normal file
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brand,line,capacity_tb,segment,pct_days_on_sale,typical_discount_pct,deepest_discount_pct,sale_events,days_observed
Seagate,"IronWolf Pro",20,consumer,25.4,9.5,21.4,31,710
Seagate,"IronWolf Pro",12,consumer,19.6,8,26.4,26,679
Seagate,"IronWolf Pro",16,consumer,18.9,9.1,24.2,24,694
WD,"Red Plus",10,consumer,15.2,10.7,30.5,37,796
Seagate,"IronWolf Pro",24,consumer,15,8.3,16.7,21,713
WD,"Red Pro",24,consumer,14.9,16.5,35.3,18,403
Seagate,"IronWolf Pro",14,consumer,13.7,13.8,34.8,28,782
WD,Gold,24,enterprise,11,7.6,24,11,544
WD,"Red Plus",12,consumer,10.2,9.4,46.6,27,775
WD,"Red Pro",18,consumer,10,8.7,31,29,763
WD,"Red Plus",8,consumer,9.5,9,27,22,781
WD,"Red Pro",8,consumer,9.5,11.1,28.9,15,791
WD,"Red Pro",22,consumer,9.5,8.5,29.7,17,767
WD,Gold,12,enterprise,9.4,7.7,21.3,14,758
Seagate,IronWolf,10,consumer,8.8,17.4,31.4,26,794
WD,"Red Pro",14,consumer,8.7,8.1,26.4,20,789
WD,Gold,24,enterprise,8.7,8.2,29.3,16,680
WD,Gold,18,enterprise,8.5,7.8,26.6,21,785
Seagate,"IronWolf Pro",10,consumer,8.2,12.9,42.2,18,794
Toshiba,N300,8,consumer,8.1,19.3,36.3,8,442
WD,"Red Pro",20,consumer,7.6,10.4,27.6,12,728
Seagate,"Exos X20",20,enterprise,7.4,9.7,44.6,11,551
WD,Gold,22,enterprise,7.1,7.9,34.3,16,760
WD,"Red Pro",12,consumer,6.9,16.3,35.4,17,611
WD,Gold,20,enterprise,6.1,6.4,26.4,12,625
WD,"Ultrastar DC HC320",8,enterprise,6,10,47.1,16,745
Seagate,"Exos X22",22,enterprise,5.9,8.8,39.2,4,323
Toshiba,MG09,18,enterprise,5.5,8.2,30.1,12,793
WD,"Red Pro",16,consumer,5.4,9.1,33.5,18,793
Toshiba,N300,10,consumer,5.4,7.2,50.2,5,331
Seagate,"Exos 7E8",8,enterprise,5,10.5,28.7,13,793
Toshiba,MG07,14,enterprise,5,12.1,64.8,11,780
WD,"Ultrastar DC HC590",26,enterprise,4.6,5.6,34.9,2,324
WD,Gold,10,enterprise,4.2,10.4,57.4,6,792
WD,Gold,14,enterprise,4.2,16,43,12,766
WD,"Ultrastar DC HC550",18,enterprise,4.2,10.7,15.2,7,730
Toshiba,MG06,10,enterprise,3.6,29.9,42.4,10,731
Toshiba,MG07,12,enterprise,3.5,11.3,35.6,7,771
Toshiba,N300,16,consumer,3.3,28.2,29,3,481
Toshiba,MG09,16,enterprise,3.3,18.7,20,3,608
WD,"Red Pro",10,consumer,3,25.2,53.5,5,725
WD,"Ultrastar DC HC520",12,enterprise,3,9.9,33.1,5,600
WD,"Ultrastar DC HC560",20,enterprise,2.7,5,18.5,4,711
WD,Gold,16,enterprise,2.6,23.3,58.9,8,681
Toshiba,N300,12,consumer,2.5,8.4,19.8,3,395
Toshiba,MG10,20,enterprise,2.4,15.1,40.8,5,736
Seagate,"Exos X18",18,enterprise,2.3,9,29.3,5,660
Seagate,"Exos 7E10",10,enterprise,2.2,6.3,21.5,5,730
WD,Gold,8,enterprise,1.9,8.8,8.8,1,724
WD,"Ultrastar DC HC550",16,enterprise,1.9,10,11.5,5,730
Toshiba,MG10,22,enterprise,1.8,12.6,20.4,4,792
Toshiba,MG09,18,enterprise,1.8,7.3,46.7,3,763
WD,"Ultrastar DC HC330",10,enterprise,1.4,5.7,10.3,4,793
WD,"Ultrastar DC HC530",14,enterprise,1.2,13.1,30.5,3,730
Seagate,"Exos X18",16,enterprise,1.1,48.3,48.4,1,437
Toshiba,MG06,8,enterprise,0.8,68.6,68.6,3,633
Seagate,"Exos X18",18,enterprise,0.6,21.6,63.1,2,793
Toshiba,MG11,24,enterprise,0.6,5.3,5.3,2,494
Seagate,"Exos X16",16,enterprise,0.5,6.3,7.1,2,556
Toshiba,MG07,14,enterprise,0.4,6.2,6.2,1,793
WD,"Ultrastar DC HC580",24,enterprise,0.3,72.7,72.7,1,360
Seagate,"Exos X24",24,enterprise,0.1,5.9,5.9,1,709
WD,"Ultrastar DC HC570",22,enterprise,0,0,0,0,730
Seagate,"Exos 7E10",8,enterprise,0,0,0,0,197
Toshiba,MG08,16,enterprise,0,0,0,0,222
1 brand line capacity_tb segment pct_days_on_sale typical_discount_pct deepest_discount_pct sale_events days_observed
2 Seagate IronWolf Pro 20 consumer 25.4 9.5 21.4 31 710
3 Seagate IronWolf Pro 12 consumer 19.6 8 26.4 26 679
4 Seagate IronWolf Pro 16 consumer 18.9 9.1 24.2 24 694
5 WD Red Plus 10 consumer 15.2 10.7 30.5 37 796
6 Seagate IronWolf Pro 24 consumer 15 8.3 16.7 21 713
7 WD Red Pro 24 consumer 14.9 16.5 35.3 18 403
8 Seagate IronWolf Pro 14 consumer 13.7 13.8 34.8 28 782
9 WD Gold 24 enterprise 11 7.6 24 11 544
10 WD Red Plus 12 consumer 10.2 9.4 46.6 27 775
11 WD Red Pro 18 consumer 10 8.7 31 29 763
12 WD Red Plus 8 consumer 9.5 9 27 22 781
13 WD Red Pro 8 consumer 9.5 11.1 28.9 15 791
14 WD Red Pro 22 consumer 9.5 8.5 29.7 17 767
15 WD Gold 12 enterprise 9.4 7.7 21.3 14 758
16 Seagate IronWolf 10 consumer 8.8 17.4 31.4 26 794
17 WD Red Pro 14 consumer 8.7 8.1 26.4 20 789
18 WD Gold 24 enterprise 8.7 8.2 29.3 16 680
19 WD Gold 18 enterprise 8.5 7.8 26.6 21 785
20 Seagate IronWolf Pro 10 consumer 8.2 12.9 42.2 18 794
21 Toshiba N300 8 consumer 8.1 19.3 36.3 8 442
22 WD Red Pro 20 consumer 7.6 10.4 27.6 12 728
23 Seagate Exos X20 20 enterprise 7.4 9.7 44.6 11 551
24 WD Gold 22 enterprise 7.1 7.9 34.3 16 760
25 WD Red Pro 12 consumer 6.9 16.3 35.4 17 611
26 WD Gold 20 enterprise 6.1 6.4 26.4 12 625
27 WD Ultrastar DC HC320 8 enterprise 6 10 47.1 16 745
28 Seagate Exos X22 22 enterprise 5.9 8.8 39.2 4 323
29 Toshiba MG09 18 enterprise 5.5 8.2 30.1 12 793
30 WD Red Pro 16 consumer 5.4 9.1 33.5 18 793
31 Toshiba N300 10 consumer 5.4 7.2 50.2 5 331
32 Seagate Exos 7E8 8 enterprise 5 10.5 28.7 13 793
33 Toshiba MG07 14 enterprise 5 12.1 64.8 11 780
34 WD Ultrastar DC HC590 26 enterprise 4.6 5.6 34.9 2 324
35 WD Gold 10 enterprise 4.2 10.4 57.4 6 792
36 WD Gold 14 enterprise 4.2 16 43 12 766
37 WD Ultrastar DC HC550 18 enterprise 4.2 10.7 15.2 7 730
38 Toshiba MG06 10 enterprise 3.6 29.9 42.4 10 731
39 Toshiba MG07 12 enterprise 3.5 11.3 35.6 7 771
40 Toshiba N300 16 consumer 3.3 28.2 29 3 481
41 Toshiba MG09 16 enterprise 3.3 18.7 20 3 608
42 WD Red Pro 10 consumer 3 25.2 53.5 5 725
43 WD Ultrastar DC HC520 12 enterprise 3 9.9 33.1 5 600
44 WD Ultrastar DC HC560 20 enterprise 2.7 5 18.5 4 711
45 WD Gold 16 enterprise 2.6 23.3 58.9 8 681
46 Toshiba N300 12 consumer 2.5 8.4 19.8 3 395
47 Toshiba MG10 20 enterprise 2.4 15.1 40.8 5 736
48 Seagate Exos X18 18 enterprise 2.3 9 29.3 5 660
49 Seagate Exos 7E10 10 enterprise 2.2 6.3 21.5 5 730
50 WD Gold 8 enterprise 1.9 8.8 8.8 1 724
51 WD Ultrastar DC HC550 16 enterprise 1.9 10 11.5 5 730
52 Toshiba MG10 22 enterprise 1.8 12.6 20.4 4 792
53 Toshiba MG09 18 enterprise 1.8 7.3 46.7 3 763
54 WD Ultrastar DC HC330 10 enterprise 1.4 5.7 10.3 4 793
55 WD Ultrastar DC HC530 14 enterprise 1.2 13.1 30.5 3 730
56 Seagate Exos X18 16 enterprise 1.1 48.3 48.4 1 437
57 Toshiba MG06 8 enterprise 0.8 68.6 68.6 3 633
58 Seagate Exos X18 18 enterprise 0.6 21.6 63.1 2 793
59 Toshiba MG11 24 enterprise 0.6 5.3 5.3 2 494
60 Seagate Exos X16 16 enterprise 0.5 6.3 7.1 2 556
61 Toshiba MG07 14 enterprise 0.4 6.2 6.2 1 793
62 WD Ultrastar DC HC580 24 enterprise 0.3 72.7 72.7 1 360
63 Seagate Exos X24 24 enterprise 0.1 5.9 5.9 1 709
64 WD Ultrastar DC HC570 22 enterprise 0 0 0 0 730
65 Seagate Exos 7E10 8 enterprise 0 0 0 0 197
66 Toshiba MG08 16 enterprise 0 0 0 0 222