Seagate 4.55GB PATA ST34520LW Manual De Usuario
Los códigos de productos
ST34520LW
16
Medalist Pro Product Manual, Rev. D
You can interrogate the drive through the host to determine the time remaining before the next scheduled mea-
surement and data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E.
This allows you to control when S.M.A.R.T. interruptions occur. Forcing S.M.A.R.T. with the RTZ command
resets the timer.
surement and data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E.
This allows you to control when S.M.A.R.T. interruptions occur. Forcing S.M.A.R.T. with the RTZ command
resets the timer.
Performance impact
S.M.A.R.T. attribute data is saved to the disc so that the events that caused a predictive failure can be recre-
ated. The drive measures and saves parameters once every two hours subject to an idle period on the inter-
face. The process of measuring off-line attribute data and saving data to the disc is uninterruptable. The
maximum on-line only (DESCPT = 0; PERF = 1) processing delay is 60 ms. The maximum fully-enabled (DEX-
CPT = 0, PERF = 0) processing delay is 450 ms.
ated. The drive measures and saves parameters once every two hours subject to an idle period on the inter-
face. The process of measuring off-line attribute data and saving data to the disc is uninterruptable. The
maximum on-line only (DESCPT = 0; PERF = 1) processing delay is 60 ms. The maximum fully-enabled (DEX-
CPT = 0, PERF = 0) processing delay is 450 ms.
Reporting control
Reporting is controlled in the Informational Exceptions Control mode page (1Ch). Subject to the reporting
method, the firmware will issue to the host an 01-5DXX sense code. The error code is preserved through bus
resets and power cycles.
method, the firmware will issue to the host an 01-5DXX sense code. The error code is preserved through bus
resets and power cycles.
Determining rate
S.M.A.R.T. monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors
increases to an unacceptable level. To determine rate, error events are logged and compared to the number of
total operations for a given attribute. The interval defines the number of operations over which to measure the
rate. The counter that keeps track of the current number of operations is referred to as the Interval Counter.
increases to an unacceptable level. To determine rate, error events are logged and compared to the number of
total operations for a given attribute. The interval defines the number of operations over which to measure the
rate. The counter that keeps track of the current number of operations is referred to as the Interval Counter.
S.M.A.R.T. measures error rates. All errors for each monitored attribute are recorded. A counter keeps track of
the number of errors for the current interval. This counter is referred to as the Failure Counter.
the number of errors for the current interval. This counter is referred to as the Failure Counter.
Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to
set thresholds for the number of errors and their interval. If the number of errors exceeds the threshold before
the interval expires, the error rate is considered to be unacceptable. If the number of errors does not exceed
the threshold before the interval expires, the error rate is considered to be acceptable. In either case, the inter-
val and failure counters are reset and the process starts over.
set thresholds for the number of errors and their interval. If the number of errors exceeds the threshold before
the interval expires, the error rate is considered to be unacceptable. If the number of errors does not exceed
the threshold before the interval expires, the error rate is considered to be acceptable. In either case, the inter-
val and failure counters are reset and the process starts over.
Predictive failures
S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. The firm-
ware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accom-
plish this, a counter is incremented each time the error rate is unacceptable and decremented (not to exceed
zero) whenever the error rate is acceptable. If the counter continually increments such that it reaches the pre-
dictive threshold, a predictive failure is signaled. This counter is referred to as the Failure History Counter.
There is a separate Failure History Counter for each attribute.
ware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accom-
plish this, a counter is incremented each time the error rate is unacceptable and decremented (not to exceed
zero) whenever the error rate is acceptable. If the counter continually increments such that it reaches the pre-
dictive threshold, a predictive failure is signaled. This counter is referred to as the Failure History Counter.
There is a separate Failure History Counter for each attribute.
5.2.8
Product warranty
Beginning on the date of shipment to customer and continuing for a period of three years, Seagate warrants
that each product (including components and subassemblies) or spare part that fails to function properly under
normal use due to defect in materials on workmanship or due to nonconformance to the applicable specifica-
tions will be repaired or replaced, at Seagate’s option and at no charge to customer, if returned by customer at
customer’s expense to Seagate’s designated facility in accordance with Seagate’s Warranty Procedure.
Seagate will pay for transporting the repair or replacement item to customer. For more detailed warranty infor-
mation refer to the Standard terms and conditions of Purchase for Seagate products.
that each product (including components and subassemblies) or spare part that fails to function properly under
normal use due to defect in materials on workmanship or due to nonconformance to the applicable specifica-
tions will be repaired or replaced, at Seagate’s option and at no charge to customer, if returned by customer at
customer’s expense to Seagate’s designated facility in accordance with Seagate’s Warranty Procedure.
Seagate will pay for transporting the repair or replacement item to customer. For more detailed warranty infor-
mation refer to the Standard terms and conditions of Purchase for Seagate products.
Shipping
When transporting or shipping a drive, a Seagate approved container must be used. Keep your original box.
They are easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved con-
tainer voids the drive warranty.
They are easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved con-
tainer voids the drive warranty.
Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in tran-
sit. Contact your Authorized Seagate Distributor to purchase additional boxes. Seagate recommends shipping
by an air-ride carrier experienced in handling computer equipment.
sit. Contact your Authorized Seagate Distributor to purchase additional boxes. Seagate recommends shipping
by an air-ride carrier experienced in handling computer equipment.