Hi,
In my system there is a 3T Winchester digital blue
Model Number: WDC WD30EZRZ-00GXCB0
Firmware Revision: 80.00A80
I bougth a second one for backyp purposes
Model Number: WDC WD30EZRZ-00Z5HB0
Firmware Revision: 80.00A80
Looks pretty simiiar to me...
The first one is in use for a month or so, I received
the second one just two hours ago.
I want to disable the security feature and the spindown-if-idle
feature of the second drive as I did with the first.
First step was to compare the output of 'hdparm -I <drive>' of the
first with that of the second one.
Differences ( I will skip identical parts ):
First:
Standards:
Used: unknown (minor revision code 0x006d)
Supported: 10 9 8 7 6 5
Likely used: 10
Second:
Standards:
Supported: 9 8 7 6 5
Likely used: 9
First:
Formfactor 3.5inch
Second:
Not mentioned
First
Commands/features:
Enabled Supported:
* DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Software settings preservation
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
* DOWNLOAD MICROCODE DMA command
* WRITE BUFFER DMA command
* READ BUFFER DMA command
Second:
Commands/features:
Enabled Supported:
DMA Setup Auto-Activate optimization
* SCT Write Same (AC2)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
unknown 206[14] (vendor specific)
"DMA Setup Ayto-Activate optimization" is enable for the first drive,
for second one it is not. The section about this feature in the
manpage says "use with extreme caytion" and I cannot decide, whether
that what is written there is still valid or some sort of cry
from the past.
I am unsure about to think about these differences...?
The second thing are the security settings. I want drives with no
security settings and no way to manipulate them without user
interaction. I want these settings stored in the drive instead
of setting them at each boot since the second drive will be
temporarily used in a docking station "past boot".
The current security settings for both drives are:
not enabled
not locked
frozen
not expired: security count
supported: enhanced erase
(I have frozen the settings for the second drive just a minute ago and
it will forget the settings (going "not frozen" then) as soon I switch
the docking station off and on again.)
If I remember correctly I did this for the frsit drive with:
freeze security setting
lock security settings
and I did this without using any password.
On the second drive "freeze" works as exspected, but "lock"
wants a password.
After startpageing for a while I found a site with "Master passwords
for some drives"...and I am unsure of what I have found there
(reliability-wise ... it was not via the TOR network, though... ;)
Currently there are no data on the second drive. So accidentally
wiping it off doesn't matter as long the drive remains intact.
I would prefer to have both drives in the same state.
I didn't changed any DMA-related settings for the first drive by the
way.
How should I handle the DMA differences between the frist and the
second drive?
How can I handle the security issue with the second drive?
Cheers!
Meino
