SSDs Not Secure

Some tests carried out by the “Non-Volatile Systems Laboratory” have revealed some serious flaws with SSDs ability to be securely erased. When using standard tools designed for spinning disks, the results were understandably bad. They also tried the built-in “Security Erase Unit” command and the results of this were generally not good. After being securely erased, most of the SSDs still contained some large fragments of the test files.

Some secure erasure software would be similarly inefficient for hard disks anyway, as things like remapped or bad sectors can still contain readable data which may not be erased during the process.

The simplest solution for securely erasing any data is to completely destroy the storage media. For hard drives this means making a real mess of the platters, for SSDs it means wrecking the whole PCB, data chips and controller chips.

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Seagate 7200 Snapped Spindle

We have received two of these failed drives recently in succession. Further clean room examination has confirmed that the spindle stack has detached itself from the motor base and coil. When first handling the drive it becomes quite obvious that this has happened as you can actually feel the pack rattling. Surprisingly we cannot see any physical damage on the media or contamination and fortunately the clamp has kept the pack secure. We would not recommend spinning the drive up in this condition. The only rework available is to transfer the pack into a good Seagate donor as part of the recovery process. Pack alignment is a critical part of this process.

Data Recovery In Hampshire

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MacBook Pro Woes

There have been some new reports of drive issues in the new MacBook Pros. It seems that the updated Seagate 7200rpm drives are getting a bit noisy at times and clicking. No reports that this causes anything particularly sinister, but after the (still ongoing) MacBook headcrash fiasco, it’s bad news to see another problem between MacBooks and their drives. There are suggestions that the new 7200.4 G-Force drives are noisy due to some new anti-shock technology. It sounds obvious that a drive spinning at 7200rpm is going to generate more noise than a 5400rpm drive. We’ll see what happens with this one. Updates to come I’m sure.

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Toshiba 400GB 2.5" Drives

Toshiba have recently announced the new GSX series of hard disk drives. With 200GB per platter these 5400rpm drives should see the light of day by the end of the year. There are other notable features such as the new acoustic technology which aims to silence seek operations.

In addition to increasing areal density to 308 gigabits-per-square-inch, the 400GB MK4058GSX incorporates acoustic techniques that make the 5,400 RPM HDD nearly inaudible during seek operations.

Tosh have also announced the new GSY series of drives which will be a touch less spacious at 320GB but spin at a whopping 7200rpm with fast data throughput of 1020 megabits per second.

The Little-Big Drive

Toshiba has just announced the 1.8″, 160GB, 5400rpm MK1617GSG drive. Apparently designed for netbooks and other such small machines, it’s a shame that this drive is a tad on the bulky side. at 8mm thick, this drive would be bulging out the sides of a current iPod or MacBook Air. With a SATA interface though, this drive could make for some fun embedded type devices or mods. I would personally love to see one squashed into an eeepc. I also bet that this little baby will be far cheaper than an equivalent solid state drive.

Samsung & Seagate Announce Terabyte Drives

Playing a game of catch up, Samsung and Seagate have gone head to head with Hitachi’s big boy by each announcing their version of a terabyte drive. Both drives feature the SATA 3Gps interface. The Samsung offering has only 3 platters opposed to Hitachi’s 5 and Seagate’s 4 which would suggest that it is not only more reliable but may be the forerunner of a future 1.5TB drive (with all that extra space for platters!).

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