Disk spinning up again and again

On my NAS I'm trying to reduce power consumption by spinning down disks when they're not used. However I noticed that after a while the disks kept on spinning up and thus kept running 24/7.

Manually shutting down the disks didn't help either, disks were up soon after.

I …

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Disk and filesystem recovery

Was asked to recover data from a SoHo NAS (Bufallo) disk. Windows had issues recognizing the partitions (now wonder as the NAS is operated with Linux). Trial was already made to use some Linux live distros (Ubuntu, Mint) in various versions to mount the data partition, with no success.

I …

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Generating huge quantities of random data

Before encrypting a disk it is recommended to fill it with random data to make prediction of encrypted blocks more difficult.

In practice this has become an issue with disks' capacity increasing - be it a SSD, with 120GB or a harddisk with 3TB : where to get such an amount of …

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Trouble with SATA-II disk

Switching from a SATA-I to a SATA-II disk (Samsung HM641JI 640 GB) showed incompatibilities between chipset used in laptop and HDD : 1+ time per second, syslog shows SATA trabsfer errors, leading to SATA bus reset et resync. Funny : this only occurs when reading bigger data (1MB+), but write accesses seem …

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