Recent content by hjreggel

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    Samsung A1 1.3 inch info

    There was some delay, but I finally got the ZIF-ATA adapter two weeks ago. As I assumed, the USB bridge influenced the write performance of the HU040HA. HU040HA ATA Performance That means that the 40GB HU040HA works perfectly if you have your data aligned to odd sectors, and use a cluster...
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    my OCZ Core SSD analysis

    My point is that there is no NAND flash random write performance problem, as long as you respect the internal structure of the flash memory, just as you accept that harddisks come with a sector size of 512 bytes. It would be the same as if you would compare a RAM disk and a harddisk by...
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    my OCZ Core SSD analysis

    I was refering to the irregular write results, without mentioning that, sorry. Harddisk benchmark tools assume that writes can be done in 512-byte increments at random locations without affecting the results. This is not true for most flash media.
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    my OCZ Core SSD analysis

    I think the main problem is that you can't use harddisk benchmark tools on flash media. You would have to get detailed technical data for the SSD to know what you should test and what you should not test. Flash memory can only be erased in certain block sizes. If you write less than that...
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    CF card as HDD?

    That's absolutely correct. Normal flash cards assume to be filled up to the rim and then re-formatted. A modern SSD controller is supposed to keep a record for each cell, and swap static data from fresh cells on heavily used cells and try to keep all cells at about the same "age". If you want...
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    Samsung A1 1.3 inch info

    I could not resist and ordered the 30GB version. There seem to be different versions for the 30GB LaCie little disk, one with the 1024 bytes per sector HU030HA, and one with the 512 bytes per sector HU035HA. At least the one I got has the 512 bytes per sector HU035HA. It has a much cleaner write...
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    Actual throughput: Ultra320, RAID 5, 1 logical volume?

    How is the controller attached to the mainboard? How many disks of which type?
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    Samsung A1 1.3 inch info

    Now I have more information and charts available. I tested the harddisk through another USB bridge, and it looks like I have to get a true 40-pin ZIF to full-size adapter to see the full write performance of the disk. Both USB bridges show some impact on the write performance, but the loss is...
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    Samsung A1 1.3 inch info

    Just an update regarding the write rate: As I assumed, the disk suffers from "misaligned writes" due to the fact that the disk stores 1024 bytes per sector, but acts as if it had the usual 512 bytes per sector. The factory format has the start of the data area (cluster 2) on an odd sector, so...
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    Samsung A1 1.3 inch info

    When I read about the new 1.3 inch Samsung SpinPoint A1 series, it reminded me of the old Microdrive days that were actually the reason why I started my website with harddisk information. The whole site was originally a list of small form factor harddisks that got seriously out of bounds ;-)...
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    Velociraptor temps are great!

    Well, my VR has three screws with free access, the fourth is covered by a sticker. Maybe it would be OK to remove the three screws and try to use a thin saw to cut the fourth srew? About the claim that the VR would not get too hot: Did you notice the pads between the harddisk and the heat...
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    Looking for a good ESATA Controller card.

    You should be aware that regular 32bit PCI has a maximum bandwidth of 127MB/s (binary), while PCIe x1 has 238MB/s (binary) - eSATA add-on cards are usually PCIe x1. That means that you would have to sacrifice your PCIe x4 slot for using a x1 card. However, I did not see any 2-port eSATA card...
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    GB/in^3

    I would recommend 2.5" harddisks. You can get 500GB at 12.5mm height, and the disks are designed to be carried around - unlike 3.5" harddisks. I would not trust DVD DL media, because it can be hard enough to read out a single layer media, so I would not take the risk of having two layers.
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    20k RPM Raptors?

    Well, that's the reason why they reduced the diameter of the platters. The latency is a *serious* problem with todays harddisks. Even the VR shows "poor" random access, simply because one full revolution takes 6ms - in words: SIX MILLISECONDS. That's more time than a full stroke! No matter...
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    20k RPM Raptors?

    Well, several years ago, some people thought that the 15,000RPM IBM disk would be a joke. It took an awful lot of time until they hit the market with a little less speed than originally advertized, but they made it! BTW: Mine is dated 23-DEC-01, unfortunately, it crashed too soon. Now 15kRPM...
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