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