Seagate ST480HM000 Seagate 600 SSD Product Manual - Page 17

Annualized Failure Rate AFR and Mean Time Between Failures MTBF, Reliability specifications - firmware

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2.10 RELIABILITY 2.10.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) The product shall achieve an Annualized Failure Rate - AFR - of 0.58%. AFR and MTBF are population statistics that are not relevant to individual units. AFR and MTBF specifications are based on the following assumptions: • 8760 power-on-hours per year. • 250 average power cycles per year. • Operations at nominal voltages. • Systems will provide adequate cooling to ensure the case temperatures do not exceed specification. 2.10.2 Reliability specifications Unrecoverable read error rate during Annualized Failure Rate (AFR) Power cycles Warranty Preventive maintenance Typical Data Retention with Power removed (at 40°C) Endurance 1 LBA per 1016 bits read, max 0.58% 25,000 cycles (at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle) Warranty terms are "Limited Warranty With Media Usage" [2] Consult your Seagate sales representative for warranty terms and conditions. None required. 12 months [1] 40GBs (max capacity) host writes per day [1] As NAND Flash devices age with use, the capability of the media to retain a programmed value begins to deteriorate. This deterioration is affected by the number of times a particular memory cell is programmed and subsequently erased. When a device is new, it has a powered off data retention capability of up to ten years. With use the retention capability of the device is reduced. Temperature also has an effect on how long a Flash component can retain its programmed value with power removed. At high temperature the retention capabilities of the device are reduced. Data retention is not an issue with power applied to the SSD. The SSD drive contains firmware and hardware features that can monitor and refresh memory cells when power is applied. [2] Limited Warranty With Media Usage: This warranty is based on the shorter of term and endurance usage of the drive: 36 months or 73 (max capacity) TBW whichever comes first. SEAGATE 600 SSD PRODUCT MANUAL, REV. B 13

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S
EAGATE
600 SSD P
RODUCT
M
ANUAL
, R
EV
. B
13
2.10
R
ELIABILITY
2.10.1
Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)
The product shall achieve an Annualized Failure Rate - AFR - of 0.58%. AFR and MTBF are population statistics that are not
relevant to individual units.
AFR and MTBF specifications are based on the following assumptions:
•
8760 power-on-hours per year.
•
250 average power cycles per year.
•
Operations at nominal voltages.
•
Systems will provide adequate cooling to ensure the case temperatures do not exceed specification.
2.10.2
Reliability specifications
Unrecoverable read error rate during
1 LBA per 10
16
bits read, max
Annualized Failure Rate (AFR)
0.58%
Power cycles
25,000 cycles
(at nominal voltage and temperature, with 60 cycles per hour
and a 50% duty cycle)
Warranty
Warranty terms are “Limited Warranty With Media Usage”
[2]
Consult your Seagate sales representative for warranty terms
and conditions.
Preventive maintenance
None required.
Typical Data Retention with Power removed (at 40°C)
12 months
[1]
Endurance
40GBs (max capacity) host writes per day
[1]
As NAND Flash devices age with use, the capability of the media to retain a programmed value begins to
deteriorate. This deterioration is affected by the number of times a particular memory cell is programmed
and subsequently erased. When a device is new, it has a powered off data retention capability of up to ten
years. With use the retention capability of the device is reduced. Temperature also has an effect on how
long a Flash component can retain its programmed value with power removed. At high temperature the
retention capabilities of the device are reduced. Data retention is not an issue with power applied to the
SSD. The SSD drive contains firmware and hardware features that can monitor and refresh memory cells
when power is applied.
[2]
Limited Warranty With Media Usage: This warranty is based on the shorter of term and endurance usage of the drive:
36 months or 73 (max capacity) TBW whichever comes first.