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#1
November 14th 03, 09:45 AM
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physical block size
How safely can i assume that the block size of a spindle,
whether its from a JBOD or from a RAID array is 512 bytes ? Thanks 
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#2
November 14th 03, 02:24 PM
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"s_t_o_r_a_g_e" wrote in message om... How safely can i assume that the block size of a spindle, whether its from a JBOD or from a RAID array is 512 bytes ? Fairly, but not completely. IIRC some Asian drives have used 1024-byte sector sizes, and of course SCSI supports variable sector sizes (and some vendors do use this feature - IBM i-series systems use a 520-byte sector size, Unisys systems uses multiple strange sizes). - bill
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#3
November 14th 03, 11:00 PM
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On 14 Nov 2003 01:45:47 -0800, (s_t_o_r_a_g_e)
wrote: How safely can i assume that the block size of a spindle, whether its from a JBOD or from a RAID array is 512 bytes ? Not. Quite a few RAID systems used 520 byte block sizes (e.g. Clariions), as well as IBM AS/400 hosts. Malc.
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