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From: larry moe 'n curly on 23 May 2010 22:16


Arno wrote:
>
> There are no "reliable" non server class disks at this time.
> Or rather they are all pretty reliable buf fail occasionally,
> so backup is a must.

Are you saying server class disk drives are reliable, and if so, why
are they more reliable than non-server class drives, that is, how do
they differ, either electronically or mechanically?
From: larry moe 'n curly on 23 May 2010 22:21


me wrote:

> What's a reliable 7200 rpm 3.5 drive that won't whine once spun up?

I haven't noticed constant whine from the last HDs I bought:

750GB Samsung F1 (but first one vibrated more than I liked)
1TB Samsung F3
750GB WD Green 5400 RPM
1TB WD Green 5400 RPM (in a WD USB enclosure)
1TB WD Green 5400 RPM
1.5TB Seagate 7200.12
1TB Hitachi 7K1000.C
1TB Hitachi HD31000 (probably same as 7K1000.C)



From: Arno on 24 May 2010 10:02
larry moe 'n curly <larrymoencurly(a)my-deja.com> wrote:


> Arno wrote:
>>
>> There are no "reliable" non server class disks at this time.
>> Or rather they are all pretty reliable buf fail occasionally,
>> so backup is a must.

> Are you saying server class disk drives are reliable, and if so, why
> are they more reliable than non-server class drives, that is, how do
> they differ, either electronically or mechanically?

No, that is not what I am saying. It would be fair to say
"there are no relaiable disks at this time". Even Flash is
a lot worse than people think.

Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno(a)wagner.name
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
From: Arno on 25 May 2010 21:36
me <noemail(a)nothere.com> wrote:
> On 24 May 2010 14:02:41 GMT, Arno <me(a)privacy.net> wrote:

>>
>>No, that is not what I am saying. It would be fair to say
>>"there are no relaiable disks at this time". Even Flash is
>>a lot worse than people think.

> Yes... I've had a flash drive go bad.

I torture-tested akingston 2GB USB Flash some time ago,
after 3700 overwrites consistent read errors and, even worse,
no errors reported by the drive!

> What brand/model drives seem to be MORE reliable?

Currently the picture is unclear to me. My take
(comments welcome of course!) is as follows:

Seagate seems to have issues with quality control.
Seems quite a few drives are failing immediately and
quite a few within the first year.

WD looks good, but there is a corrosion issue
with silver plated contacts on the PCBs. The general
consensus is that Silver plating has no place in
post-tube area electronics, as it can cause complex
distortions in low voltage signals. (Silver sulfide
seems to be a semi-conductor like substance than can
even cause diode-like properties in contacts.)
There are some reports from people that have had HDDs
failing from this issue.

Samsung has vibration issues, but they are more cosmetic,
unless you mind interference sounds with 2 or more drives.
(I do.)

Hitachi seems to be in the clear at this time. The only
thing I observed with my last 250GB Hitachi was a bit more
heat than with other drives. Not a problem with reasonable
cooling.

Arno

--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno(a)wagner.name
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
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