of DrivesAverage Agein yearsAnnualFailure Rate95% Con
denceIntervalHGST Des star !"#$$$
ac &la'e Hard Drive Failure Rates T(roug( Dece)&er *+,
#$+-.a)e/0odel Si'e.u
2HDS!##$#$A3A**$4 # $ T -,6-+* 9+ +%$ 7% 8 + -%HGST Des star
5"*$$$2HDS5C*$*$A3A6*$4 * $ T -,595# 6$ 6%$ -% 8 $ 9%HGST Des star
!"*$$$2HDS!#*$*$A3A6-$4 * $ T +,$+6* +# *%+ -% 8 * -%HGST Des star
5"-$$$2HDS5C-$-$A3 6*$4 - $ T #,597+ 7$ 9%$ 6% 8 + -%HGST 0egascale
-$$$2HGST H0S5C-$-$A3 6-$4 - $ T 6,9-9$ -+ -%+ $% 8 # $%HGST
0egascale -$$$2HGST H0S5C-$-$ 3 6-$4 - $ T *,+$*$ !$ 5%$ #% 8 +
$%Seagate arracuda !#$$ ++2ST*+5$$*-+AS4 + 5 T *$6- !#* 5%+7 9% 8
#7 9%Seagate arracuda 3:2ST*+5$$5-+AS4 + 5 T +,5$5- 99 5%7 +% 8 ++
+%Seagate arracuda !#$$ +-2ST*$$$D0$$+4 * $ T +,+6*# #-* +%-$ 7% 8
-5 -%Seagate arracuda ;T2ST**$$$65+AS4 * $ T #!9# 9- 7%# 6% 8 7
$%Seagate arracuda ;T2ST-$$$D;$$$4 - $ T +!!+ !+ +%$ +% 8 -
+%Seagate Des to< HDD +5
2ST-$$$D0$$$4 - $ T +#,$97$ 9# 6%# *% 8 # 9%Seagate 6 T SATA *
52ST6$$$D;$$$4 6 $ T -5$ -$ $%$ $% 8 #+ +%Tos(i&a DT$+ACA
Series2T=SHI A DT$+ACA*$$4 * $ T -!+ !* !%$ -% 8 +* *%>estern
Digital Red * T2>DC >D*$ FR;4 * $ T 759$ 96 9%5 $% 8 9
*%>estern Digital - T2>DC >D-$ FR;4 - $ T -5$ 7$ $%$ $% 8
+$ $%>estern Digital Red 6 T2>DC >D6$ FR;4 6 $ T #!$$ +*
+%$ +% 8 +! +%
8/17/2019 Hdd Research
2/4
ac &la'e Hard Drive Failure Rates T(roug( Dece)&er *+,
#$+-.a)e/0odel Si'eof Drives Average Agein years AnnualFailure Rate
95% Con denceIntervalHGST Des star !"#$$$ # $ THGST Des star 5"*$$$
* $ THGST Des star !"*$$$ * $ THGST Des star 5"-$$$ - $ T
