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On Monday 05 Sep 2016 22:56:33 Hans wrote: |
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> On 05/09/16 15:31, Mick wrote: |
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> > On Monday 05 Sep 2016 10:42:34 Hans wrote: |
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> >> On 01/09/16 16:04, gevisz wrote: |
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> >>> I have bought an external 5TB Western Digital hard drive |
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> >>> that I am going to use mainly for backing up some files |
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> >>> in my home directory and carrying a very big files, for |
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> >>> example a virtual machine image file, from one computer |
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> >>> to another. This hard drive is preformatted with NTFS. |
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> >>> Now, I am going to format it with ext4 which probably |
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> >>> will take a lot of time taking into account that it is |
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> >>> going to be done via USB connection. So, before formatting |
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> >>> this hard drive I would like to know if it is still |
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> >>> advisable to partition big hard drives into smaller |
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> >>> logical ones. |
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> >>> |
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> >>> For about 20 last years, following an advice of my older |
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> >>> colleague, I always partitioned all my hard drives into |
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> >>> the smaller logical ones and do very well know all |
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> >>> disadvantages of doing so. :) |
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> >>> |
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> >>> But what are disadvantages of not partitioning a big |
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> >>> hard drive into smaller logical ones? |
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> >>> |
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> >>> Is it still advisable to partition a big hard drive |
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> >>> into smaller logical ones and why? |
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> >> |
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> >> I use 2TB USB drive with one EXT4 partition. Took about 30 seconds to |
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> >> format connected to a USB2 port. Testing the drive with dd and copying |
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> >> files to the drive is very slow. Don't touch "Green Drives". They die |
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> >> like flies. |
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> > |
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> > Did you get the logical and physical sector aligned when you partitioned |
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> > them? (if not sure, google for 4k sector drives). All recent versions of |
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> > fdisk/gdisk/parted and friends will align them by default. |
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> > |
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> > How did you test it with dd and how are you copying files? |
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> > |
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> > How slow is slow in this case? |
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> |
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> Can't remember. Much slower than copying 1TB Video files from and to |
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> SATA disks. |
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Ah, yes, it would be so because you would be copying over a USB 2.0, port |
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which can read at around 30MB/s and write at about half that. Had you used an |
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e-sata interface instead of USB 2.0, the same drive would perform comparably |
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to SATA disks/controllers. |
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-- |
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Regards, |
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Mick |
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