DataTale AIR User Manual
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Contents
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HDD CAPACITYQ: I would like to format my hard drives with the FAT (a.k.a. File Allocation Table)format, which can be read and written by both Mac and PC. Is there any limitation on itscapacity?A: Yes, please check the table below for reference.File System NTFS FAT32 FAT (Format byWin2000 / WinXP)FAT16CapacityLimitationVista: 16384TBXP: 2TBWindows: 32GBMac: 2TB4GB 2GBDISCREPANCY IN REPORTED & ACTUAL SIZE CAPACITYQ: If I have a 750GB HDD, why does the RAID Unit only recognized the HDD availablespace as to be less than 750GB?A: In the hard drive industry the partitioned size will be less than the printed capacity onthe label. This is consistent whether it is Western Digital, Seagate, Samsung, etc. Forexample, a 1TB hard drive will have a formatted capacity of approximately 932GB. Thisis due to the fact that computers calculate capacity based on 1024 bytes/kilobyte, whilethe hard drive calculation is based on 1000 instead of 1024. Hard drive manufacturersdefine a megabyte as 1,000,000 bytes and a gigabyte as 1,000,000,000 bytes, which isa decimal (base 10) measurement. Computers define a megabyte as 1,048,576 bytesand a gigabyte as 1,073,741,824 bytes. These are binary (base 2) measurements. Thisis why the two different industries will report different capacities for the same drive. Thenumber of bytes is the same, but a different number of bytes is used to make amegabyte and a gigabyte.REBUILDQ: Does the RAID Unit have to be connected to the host computer when it is in rebuildmode?A: No, it does not have to be. The RAID Unit can support offline rebuild, which means itcan perform the rebuild function without being connected to a host computer.RAID MASTER: CONNECTION RESTRICTIONQ: Is there any connection restrictions for the RAID MASTER?A: Yes, the RAID MASTER can only be operated via USB 2.0 or FireWire 800. If youchoose to use eSATA for data transferring, please set up the RAID configuration viaUSB or FireWire first.37 |
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