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	HDS725050KLA360	500 GB	4	3436	0	9.41
Hitachi	HUA722020ALA330...	2 TB	3	4186	2	8.53
Hitachi	HUA723030ALA640	3 TB	12	2868	0	7.86
Hitachi	HUA7250SBSUN500G	500 GB	2	2785	0	7.63
Hitachi	HDS721010KLA330	1 TB	3	3406	1	7.13
Hitachi	HUA721050KLA330	500 GB	2	3842	1	7.02
Hitachi	HUA723020ALA640	2 TB	10	2452	0	6.72
Hitachi	HDS5C3020ALA632	2 TB	3	2236	0	6.13
Hitachi	HDT721010SLA360	1 TB	8	2892	2	5.81
Hitachi	HDS5C4040ALE630	4 TB	21	2076	0	5.69
Hitachi	HUA722020ALA330	2 TB	17	2826	46	5.55
Hitachi	HDS5C3030ALA630	3 TB	18	2020	2	5.23
Hitachi	HDP725050GLA360	500 GB	5	1989	8	4.82
Hitachi	HDE721064SLA360	640 GB	2	2764	6	4.77
Hitachi	HDT725025VLA380	250 GB	5	1697	0	4.65
Hitachi	HDS722020ALA330	2 TB	3	2082	1	4.60
Hitachi	HDE721010SLA330	1 TB	6	2943	41	4.55
Hitachi	HDT725032VLA360	320 GB	3	2689	2	4.36
Hitachi	HUA721075KLA330	752 GB	2	1592	0	4.36
Hitachi	HUA721010KLA330	1 TB	3	2172	29	4.33
Hitachi	HDS728080PLA380	82 GB	5	1497	0	4.10
Hitachi	HTE543232A7A384	320 GB	4	1848	10	4.08
Hitachi	HUA723020ALA641	2 TB	17	2164	155	4.06
Hitachi	HUA722010CLA330	1 TB	8	1737	1	4.01
Hitachi	HUA722020ALA331	2 TB	16	2338	138	3.92
Hitachi	HDS721075KLA330	752 GB	9	1767	1	3.90
Hitachi	HUA722010CLA630	1 TB	2	2395	260	3.29
Hitachi	HDS721050CLA660	500 GB	7	1725	290	3.20
Hitachi	HTS543216L9A300	160 GB	2	1966	261	3.14
Hitachi	HDS721010CLA332	1 TB	10	1603	26	2.89
Hitachi	HDS723020BLA642	2 TB	5	2630	386	2.73
Hitachi	HDP725025GLA380	250 GB	2	1171	2	2.40
Hitachi	HDS721050CLA662	500 GB	2	844	0	2.32
Hitachi	HDS721010CLA632	1 TB	2	837	0	2.29
Hitachi	HTS542525K9SA00	250 GB	4	1011	2	2.21
Hitachi	HDS721050CLA360	500 GB	3	1532	23	2.21
Hitachi	HDS723030ALA640	3 TB	3	1323	33	2.21
Hitachi	HTS723216L9SA60	160 GB	3	1070	1	2.16
Hitachi	HDS728080PLAT20	82 GB	2	2248	22	2.07
Hitachi	HTS545025B9SA02	250 GB	7	1009	140	2.04
Hitachi	HUS724030ALE641	3 TB	12	734	0	2.01
Hitachi	HTS541060G9AT00	64 GB	2	973	3	1.97
Hitachi	HTS545025B9A300	250 GB	15	743	135	1.95
Hitachi	HTS545050B9A300	500 GB	9	1270	741	1.85
Hitachi	HTS725032A9A364	320 GB	5	1055	205	1.83
Hitachi	HDS721010CLA630	1 TB	2	890	1	1.82
Hitachi	HDS721032CLA362	320 GB	2	848	1030	1.81
Hitachi	HDS724040ALE640	4 TB	4	659	0	1.81
Hitachi	HTS543232L9SA02	320 GB	3	1707	398	1.81
Hitachi	HDS721050CLA362	500 GB	6	652	169	1.68
Hitachi	HTS727550A9E364	500 GB	7	909	313	1.61
Hitachi	HCS5C1032CLA382	320 GB	2	1409	3	1.58
Hitachi	HTS545032B9A300	320 GB	14	617	172	1.53
Hitachi	HDS721680PLA380	80 GB	2	817	4	1.47
Hitachi	HTS545016B9A300	160 GB	5	653	4	1.36
Hitachi	HUS724040ALE641	4 TB	11	530	1	1.29
Hitachi	HDT725032VLA380	320 GB	2	441	0	1.21
Hitachi	HTS541080G9SA00	80 GB	2	565	1	1.19
Hitachi	HDS721616PLA380	160 GB	5	1115	289	1.10
Hitachi	HTS725050A7E630	500 GB	4	1059	738	1.02
Hitachi	HTS543232L9A300	320 GB	2	315	0	0.87
Hitachi	HTS723232A7A364	320 GB	9	782	360	0.82
Hitachi	HTS547550A9E384	500 GB	13	451	170	0.82
Hitachi	HTS545016B9SA02	160 GB	2	507	5	0.66
Hitachi	HTS421260H9AT00	64 GB	2	1028	7	0.63
Hitachi	HTS547575A9E384	752 GB	5	694	414	0.57
Hitachi	HTS721060G9SA00	64 GB	2	828	4	0.55
Hitachi	HTS543232A7A384	320 GB	13	386	325	0.55
Hitachi	HTS722020K9SA00	200 GB	2	276	2	0.52
Hitachi	HDT721064SLA360	640 GB	2	990	4	0.51
Hitachi	HTS545050A7E380	500 GB	8	344	258	0.44
Hitachi	HTS548040M9AT00	40 GB	2	452	2	0.42
Hitachi	HTS541680J9SA00	80 GB	7	489	7	0.38
Hitachi	HTS547564A9E384	640 GB	3	308	350	0.37
Hitachi	HTS542516K9SA00	160 GB	3	411	4	0.30
Hitachi	HTS543225L9A300	250 GB	3	595	5	0.28
Hitachi	HTS542512K9SA00	120 GB	5	184	4	0.23
Hitachi	HTS541616J9SA00	160 GB	3	417	89	0.23
Hitachi	HTS543225A7A384	250 GB	2	192	12	0.21
Hitachi	HTS721010G9AT00	100 GB	2	57	0	0.16
Hitachi	HTS541612J9SA00	120 GB	11	633	218	0.13
Hitachi	HTS725025A9A364	250 GB	2	297	523	0.06
Hitachi	HTS542525K9A300	250 GB	3	183	342	0.04
Hitachi	HTS725050A9A364	500 GB	3	856	983	0.04
Hitachi	HTS543212L9A300	120 GB	2	1802	550	0.02
Hitachi	HDS721010DLE630	1 TB	2	429	1656	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	3436	0	9.41
Hitachi	Sun Internal	1	2	2785	0	7.63
Hitachi	Ultrastar 7K3000	3	39	2454	68	5.91
Hitachi	Deskstar 5K4000	1	21	2076	0	5.69
Hitachi	Deskstar 5K3000	2	21	2051	2	5.35
Hitachi	Ultrastar A7K1000	3	7	2484	13	5.11
Hitachi	Ultrastar A7K2000	5	46	2537	77	4.81
Hitachi	Deskstar 7K1000.B	2	10	2512	3	4.75
Hitachi	Deskstar 7K1000	2	12	2176	1	4.71
Hitachi	Deskstar 7K2000	1	3	2082	1	4.60
Hitachi	Deskstar E7K1000	1	6	2943	41	4.55
Hitachi	Deskstar P7K500	2	7	1755	6	4.13
Hitachi	Deskstar T7K500	3	10	1743	1	3.88
Hitachi	Deskstar 7K80	2	7	1712	7	3.52
Hitachi	Deskstar 7K3000	2	8	2140	253	2.53
Hitachi	Deskstar 7K1000.C	8	34	1278	160	2.49
Hitachi	Travelstar 7K320	1	3	1070	1	2.16
Hitachi	Deskstar 7K4000	1	4	659	0	1.81
Hitachi	Travelstar 5K500.B	6	52	818	233	1.72
Hitachi	Ultrastar 7K4000	2	23	636	1	1.67
Hitachi	Travelstar 7K750	1	7	909	313	1.61
Hitachi	CinemaStar 5K1000	1	2	1409	3	1.58
Hitachi	Travelstar 5K100	2	4	769	2	1.58
Hitachi	Travelstar Z5K320	3	19	674	226	1.26
Hitachi	Deskstar 7K160	2	7	1030	208	1.20
Hitachi	Travelstar 5K320	5	12	1256	236	1.19
Hitachi	Travelstar Z7K500	1	4	1059	738	1.02
Hitachi	Travelstar 7K500	3	10	844	502	0.94
Hitachi	Travelstar Z7K320	1	9	782	360	0.82
Hitachi	Travelstar 5K250	4	15	450	71	0.73
Hitachi	Travelstar 5K750	3	21	488	254	0.69
Hitachi	Travelstar 4K120	1	2	1028	7	0.63
Hitachi	Travelstar 7K200	1	2	276	2	0.52
Hitachi	Travelstar Z5K500	1	8	344	258	0.44
Hitachi	Travelstar 5K80	1	2	452	2	0.42
Hitachi	Travelstar 7K100	2	4	443	2	0.36
Hitachi	Travelstar 5K160	3	21	554	130	0.23
Hitachi	Deskstar 7K1000.D	1	2	429	1656	0.00

README.md

Hitachi Hard Drives

Contents

HDD by Model

HDD by Family