I've bought a new disk (HDD, WD purple) but instead of
replacing the old, I disconnected internal DVD recorder and
I moved the old one there (I had no spare "molex" nor esata
channels left).
Now I have found a strange thing : the timing of the facts
is too suspicious to be decorrelated : my USB alcatel model
fails to be charged at a pace fast enough to keep up with
battery consumption and after 1-2 hours of intense use,
switches off.
would unmount the drive cause it to stop spinning ?
There is a faster way to sendo some low level command to
make it stop spinning ? I.g. some "IOCTL" sequence.
for those really knowledgeable in internal Linux working :
does a drive not actively used (no files opened, no file
manager operating on it) require some form of "polling" its
state that would cause frequent automatical restartig of
spinning ? In this case, stopping it would be harmful and
enhance preature wearing of the motors and all and it would
have no benefit to manually stop spinning.
Am 29.09.2023 schrieb Fonntuggnio <JoeFonntuggnio@libbbero.it>:
I've bought a new disk (HDD, WD purple) but instead of
replacing the old, I disconnected internal DVD recorder and
I moved the old one there (I had no spare "molex" nor esata
channels left).
Now I have found a strange thing : the timing of the facts
is too suspicious to be decorrelated : my USB alcatel model
fails to be charged at a pace fast enough to keep up with
battery consumption and after 1-2 hours of intense use,
switches off.
Seems to be an USB problem. A bus has limited amperage.
would unmount the drive cause it to stop spinning ?
Not directly. Even when it is mounted it can be spinned down and
spinned up again when needed.
There is a faster way to sendo some low level command to
make it stop spinning ? I.g. some "IOCTL" sequence.
hdparm https://superuser.com/questions/852727/safe-to-manually-spin-down-hard-drive-with-hdparm
for those really knowledgeable in internal Linux working :
does a drive not actively used (no files opened, no file
manager operating on it) require some form of "polling" its
state that would cause frequent automatical restartig of
spinning ? In this case, stopping it would be harmful and
enhance preature wearing of the motors and all and it would
have no benefit to manually stop spinning.
Every read request (not in cache) will cause it to spin up.
Write request can be cached and will be synced at unmount (can be
invoked by "sync").
On 29/09/23 10:56, Marco Moock wrote:
Am 29.09.2023 schrieb Fonntuggnio
<JoeFonntuggnio@libbbero.it>:
I've bought a new disk (HDD, WD purple) but instead of
replacing the old, I disconnected internal DVD recorder and
I moved the old one there (I had no spare "molex" nor esata
channels left).
Now I have found a strange thing : the timing of the facts
is too suspicious to be decorrelated : my USB alcatel model
fails to be charged at a pace fast enough to keep up with
battery consumption and after 1-2 hours of intense use,
switches off.
Seems to be an USB problem. A bus has limited amperage.
would unmount the drive cause it to stop spinning ?
Not directly. Even when it is mounted it can be spinned
down and
spinned up again when needed.
There is a faster way to sendo some low level command to
make it stop spinning ? I.g. some "IOCTL" sequence.
hdparm
https://superuser.com/questions/852727/safe-to-manually-spin-down-hard-drive-with-hdparm
tnx for this very prompt reply ! I'll study the case
for those really knowledgeable in internal Linux working :
does a drive not actively used (no files opened, no file
manager operating on it) require some form of "polling" its
state that would cause frequent automatical restartig of
spinning ? In this case, stopping it would be harmful and
enhance preature wearing of the motors and all and it would
have no benefit to manually stop spinning.
Every read request (not in cache) will cause it to spin up.
Write request can be cached and will be synced at unmount
(can be
invoked by "sync").
tnx !
I've bought a new disk (HDD, WD purple) but instead of replacing the
old, I disconnected internal DVD recorder and I moved the old one there
(I had no spare "molex" nor esata channels left).
Now I have found a strange thing : the timing of the facts is too
suspicious to be decorrelated : my USB alcatel model fails to be charged
at a pace fast enough to keep up with battery consumption and after 1-2
hours of intense use, switches off.
I am thinking the power (we call it "alimentatore" but dunno the English
word ... the power source, let's say) is insufficient to cover up all
devices properly and fails to send enough current to external devices
(the HDD behaves normally)
now the true question (The drive currently is mounted via FSTAB)
would unmount the drive cause it to stop spinning ?
There is a faster way to sendo some low level command to make it stop spinning ? I.g. some "IOCTL" sequence.
for those really knowledgeable in internal Linux working : does a drive
not actively used (no files opened, no file manager operating on it)
require some form of "polling" its state that would cause frequent automatical restartig of spinning ? In this case, stopping it would be harmful and enhance preature wearing of the motors and all and it would
have no benefit to manually stop spinning.
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