Please take all columns into account when reading the table. Pay attention on the number of tested samples and power-on days. Simultaneous high values of both MTBF and errors are possible if only rare drives in the subset encounter errors.

Days - avg. days per sample, Err - avg. errors per sample, MTBF - avg. MTBF in years per sample.

MFG	Model	Size	Samples	Days	Err	MTBF
Hitachi	HDT721032SLA360	320 GB	1	3534	0	9.68
Hitachi	HDS725050KLA360	500 GB	4	3383	0	9.27
Hitachi	HDS5C3020ALA632	2 TB	2	3285	0	9.00
Hitachi	HUA7250SBSUN500G	500 GB	2	2785	0	7.63
Hitachi	HDT725025VLA380	250 GB	2	2611	0	7.15
Hitachi	HUA721050KLA330	500 GB	2	3842	1	7.02
Hitachi	HDS5C1010CLA382	1 TB	1	2374	0	6.51
Hitachi	HDS722020ALA330	2 TB	2	2315	0	6.35
Hitachi	HUA723020ALA640	2 TB	9	2294	0	6.29
Hitachi	HDT725032VLA360	320 GB	2	3927	2	6.26
Hitachi	HDS721616PLAT80	160 GB	1	2187	0	5.99
Hitachi	HDS5C4040ALE630	4 TB	21	2076	0	5.69
Hitachi	HDT721010SLA360	1 TB	6	3011	2	5.57
Hitachi	HDS728080PLA380	82 GB	2	2026	0	5.55
Hitachi	HTE543232A7A384	320 GB	3	1975	0	5.41
Hitachi	HUA722020ALA330	2 TB	12	2549	64	5.39
Hitachi	HUA722010ALA330	1 TB	1	1925	0	5.28
Hitachi	HDS5C3030ALA630	3 TB	18	2020	2	5.23
Hitachi	HDT721032SLA380	320 GB	1	1893	0	5.19
Hitachi	HCC543216A7A380	160 GB	1	1843	0	5.05
Hitachi	HTE545050B9A300	500 GB	1	1809	0	4.96
Hitachi	HUA723020ALA641	2 TB	14	1892	145	4.92
Hitachi	HUA723030ALA640	3 TB	3	1792	0	4.91
Hitachi	HTS725050A9A362	500 GB	1	1722	0	4.72
Hitachi	HTS725032A9A360	320 GB	1	1622	0	4.45
Hitachi	HUA721075KLA330	752 GB	2	1592	0	4.36
Hitachi	HDS721050DLE630	500 GB	1	1580	0	4.33
Hitachi	HDE721010SLA330	1 TB	3	3550	4	4.25
Hitachi	HDE721064SLA360	640 GB	2	2248	6	4.00
Hitachi	HDP725050GLA360	500 GB	4	1735	10	3.97
Hitachi	HDS728080PLAT20	82 GB	1	1438	0	3.94
Hitachi	HDS721050CLA360	500 GB	1	1429	0	3.92
Hitachi	HDS721075KLA330	752 GB	9	1767	1	3.90
Hitachi	HUA722020ALA331	2 TB	14	2309	158	3.78
Hitachi	HUA722010CLA330	1 TB	5	1352	0	3.71
Hitachi	HTS541060G9AT00	64 GB	1	1351	0	3.70
Hitachi	HDT721025SLA380	250 GB	1	1332	0	3.65
Hitachi	HDS721032CLA362	320 GB	1	1323	0	3.63
Hitachi	HDS721010KLA330	1 TB	1	3610	2	3.30
Hitachi	HUA722010CLA630	1 TB	2	2395	260	3.29
Hitachi	HDS5C1050CLA382	500 GB	1	1123	0	3.08
Hitachi	HTS545016B9A300	160 GB	2	1116	0	3.06
Hitachi	HTS542525K9SA00	250 GB	3	1273	1	2.88
Hitachi	HDS723020BLA642	2 TB	5	2630	386	2.73
Hitachi	HDP725025GLA380	250 GB	2	1109	2	2.36
Hitachi	HTS543216L9SA02	160 GB	1	851	0	2.33
Hitachi	HDS721050CLA662	500 GB	2	844	0	2.32
Hitachi	HDS721010CLA632	1 TB	2	837	0	2.29
Hitachi	HDS723030ALA640	3 TB	3	1323	33	2.21
Hitachi	HTS727550A9E364	500 GB	5	1035	233	2.11
Hitachi	HDS721050CLA660	500 GB	5	1484	406	1.94
Hitachi	H7210CA30SUN1.0T	1 TB	1	696	0	1.91
Hitachi	HDS721010CLA332	1 TB	4	2005	61	1.86
Hitachi	HTS725032A9A364	320 GB	3	1248	342	1.81
Hitachi	HDS724040ALE640	4 TB	3	655	0	1.80
Hitachi	HUS724030ALE641	3 TB	11	647	0	1.77
Hitachi	HTS723225L9A360	250 GB	1	644	0	1.77
Hitachi	HUS724040ALE641	4 TB	8	665	1	1.60
Hitachi	HDS721050CLA362	500 GB	4	615	254	1.53
Hitachi	HTS541660J9SA00	64 GB	1	517	0	1.42
Hitachi	HTS725050A7E630	500 GB	3	951	641	1.36
Hitachi	HTS545025B9A300	250 GB	7	548	288	1.31
Hitachi	HCC547550A9E380	500 GB	1	445	0	1.22
Hitachi	HDT725032VLA380	320 GB	2	441	0	1.21
Hitachi	HTS723220L9A360	200 GB	1	401	0	1.10
Hitachi	HTS721060G9SA00	64 GB	1	1545	3	1.06
Hitachi	HDS721616PLA380	160 GB	3	445	3	0.95
Hitachi	HTS723232A7A364	320 GB	7	954	462	0.91
Hitachi	HCS5C1032CLA382	320 GB	1	1997	5	0.91
Hitachi	HTS545032B9A300	320 GB	7	412	343	0.86
Hitachi	HTS547550A9E384	500 GB	8	419	147	0.80
Hitachi	HTS545025B9SA02	250 GB	4	682	244	0.75
Hitachi	HTS541080G9SA00	80 GB	1	525	1	0.72
Hitachi	HTS542512K9SA00	120 GB	1	245	0	0.67
Hitachi	HTS545016B9SA02	160 GB	2	507	5	0.66
Hitachi	HTS547575A9E384	752 GB	3	373	343	0.64
Hitachi	HTS542520K9A300	200 GB	1	466	1	0.64
Hitachi	HTE723225A7A364	250 GB	1	227	0	0.62
Hitachi	HDS721010CLA630	1 TB	1	678	2	0.62
Hitachi	HTS543232L9A300	320 GB	1	223	0	0.61
Hitachi	HDS722580VLSA80	82 GB	1	2494	11	0.57
Hitachi	HTS545032B9A302	320 GB	1	605	2	0.55
Hitachi	HUA721010KLA330	1 TB	1	200	0	0.55
Hitachi	HTS722020K9SA00	200 GB	2	276	2	0.52
Hitachi	HTS721080G9SA00	80 GB	1	372	1	0.51
Hitachi	HDT721064SLA360	640 GB	2	990	4	0.51
Hitachi	HTS545050A7E380	500 GB	7	384	254	0.50
Hitachi	HTS722010K9SA00	100 GB	1	327	1	0.45
Hitachi	HTS548040M9AT00	40 GB	2	452	2	0.42
Hitachi	HTS541680J9SA00	80 GB	6	538	8	0.40
Hitachi	HTS547564A9E384	640 GB	3	308	350	0.37
Hitachi	HTS541616J9SA00	160 GB	2	379	118	0.32
Hitachi	HTS421260H9AT00	64 GB	1	1338	12	0.28
Hitachi	HTS543225L9A300	250 GB	2	525	5	0.25
Hitachi	HTS542580K9SA00	80 GB	1	85	0	0.23
Hitachi	HTS723216L9SA60	160 GB	1	246	2	0.23
Hitachi	HTS542516K9SA00	160 GB	2	433	5	0.21
Hitachi	HCC545016B9A300	160 GB	1	70	0	0.19
Hitachi	HTS541612J9AT00	120 GB	1	69	0	0.19
Hitachi	HTS543232A7A384	320 GB	6	280	529	0.16
Hitachi	HTS721010G9AT00	100 GB	2	57	0	0.16
Hitachi	HTS541040G9SA00	40 GB	1	330	5	0.15
Hitachi	HTS541640J9SA00	40 GB	1	46	0	0.13
Hitachi	HTS727575A9E364	752 GB	1	1659	36	0.12
Hitachi	HTS541060G9SA00	64 GB	1	255	6	0.10
Hitachi	HTS541612J9SA00	120 GB	6	669	45	0.10
Hitachi	HTS543232L9SA00	320 GB	1	207	5	0.09
Hitachi	HTS543232L9SA02	320 GB	2	1598	597	0.07
Hitachi	HTS725025A9A364	250 GB	2	297	523	0.06
Hitachi	HTS542525K9A300	250 GB	1	110	8	0.03
Hitachi	HTS543225A7A384	250 GB	1	237	23	0.03
Hitachi	HTS543212L9A300	120 GB	2	1802	550	0.02
Hitachi	HDP725016GLA380	160 GB	1	1804	250	0.02
Hitachi	HTS543216L9A300	160 GB	1	1644	522	0.01
Hitachi	HDS723015BLA642	1.5 TB	1	1357	1016	0.00
Hitachi	HCC543225A7A380	250 GB	1	0	0	0.00
Hitachi	HDT722516DLAT80	164 GB	1	1481	2014	0.00
Hitachi	HTS723216L9A360	160 GB	1	646	1013	0.00
Hitachi	HDS721010DLE630	1 TB	1	639	1021	0.00
Hitachi	HTS725050A9A364	500 GB	2	867	1465	0.00
Hitachi	HTS545050B9A300	500 GB	3	510	1882	0.00
Hitachi	HTS725032A7E630	320 GB	1	348	1025	0.00
Hitachi	DK23AA-12	12 GB	1	4	31	0.00
Hitachi	HCS5C1050CLA382	500 GB	1	9	142	0.00
Hitachi	HTS721060G9AT00	64 GB	1	0	37	0.00

HDD by Family

Days - avg. days per sample, Err - avg. errors per sample, MTBF - avg. MTBF in years per sample.

MFG	Family	Models	Samples	Days	Err	MTBF
Hitachi	Deskstar 7K500	1	4	3383	0	9.27
Hitachi	Sun Internal	1	2	2785	0	7.63
Hitachi	Deskstar 7K2000	1	2	2315	0	6.35
Hitachi	Deskstar 5K4000	1	21	2076	0	5.69
Hitachi	Deskstar 5K3000	2	20	2146	2	5.60
Hitachi	Ultrastar 7K3000	3	26	2019	78	5.39
Hitachi	Deskstar 7K80	2	3	1830	0	5.01
Hitachi	Deskstar T7K500	3	6	2326	1	4.87
Hitachi	Deskstar 7K1000.B	5	11	2437	2	4.81
Hitachi	Deskstar 5K1000	2	2	1748	0	4.79
Hitachi	Ultrastar A7K1000	3	5	2214	1	4.66
Hitachi	Ultrastar A7K2000	5	34	2247	103	4.35
Hitachi	Deskstar E7K1000	1	3	3550	4	4.25
Hitachi	Unknown	1	2	2248	6	4.00
Hitachi	Deskstar 7K1000	2	10	1951	1	3.84
Hitachi	Deskstar P7K500	3	7	1566	42	2.94
Hitachi	CinemaStar Z5K320	2	2	922	0	2.53
Hitachi	Deskstar 7K3000	3	9	2053	338	2.25
Hitachi	Deskstar 7K160	2	4	880	2	2.21
Hitachi	Deskstar 7K1000.D	2	2	1109	511	2.17
Hitachi	Deskstar 7K1000.C	8	20	1235	165	2.03
Hitachi	Sun	1	1	696	0	1.91
Hitachi	Deskstar 7K4000	1	3	655	0	1.80
Hitachi	Travelstar 7K750	2	6	1139	200	1.78
Hitachi	Travelstar Z5K320	3	10	784	320	1.72
Hitachi	Ultrastar 7K4000	2	19	654	1	1.70
Hitachi	Travelstar 7K500	5	9	1046	556	1.64
Hitachi	CinemaStar C5K750	1	1	445	0	1.22
Hitachi	Travelstar 5K250	6	9	621	3	1.18
Hitachi	Travelstar 5K100	4	4	615	3	1.17
Hitachi	Travelstar 5K500.B	8	27	616	410	1.15
Hitachi	Travelstar Z7K500	2	4	800	737	1.02
Hitachi	Travelstar Z7K320	2	8	863	405	0.88
Hitachi	Travelstar 7K320	4	4	484	254	0.77
Hitachi	Travelstar 5K750	3	14	386	233	0.67
Hitachi	Deskstar 7K250	1	1	2494	11	0.57
Hitachi	Travelstar Z5K500	1	7	384	254	0.50
Hitachi	Travelstar 7K200	2	3	293	2	0.49
Hitachi	CinemaStar 5K1000	2	2	1003	74	0.46
Hitachi	Travelstar 5K80	1	2	452	2	0.42
Hitachi	Travelstar 7K100	4	5	406	9	0.38
Hitachi	Travelstar 5K320	7	10	1078	283	0.37
Hitachi	Travelstar 5K160	6	17	508	33	0.32
Hitachi	Travelstar 4K120	1	1	1338	12	0.28
Hitachi	CinemaStar C5K500	1	1	70	0	0.19
Hitachi	Deskstar T7K250	1	1	1481	2014	0.00
Hitachi	Travelstar DK23XX/D...	1	1	4	31	0.00

README.md

Hitachi Hard Drives

Contents

HDD by Model

HDD by Family