<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-08-25</periodOfReport>
    <issuer>
        <issuerCik>0000855109</issuerCik>
        <issuerName>EXABYTE CORP /DE/</issuerName>
        <issuerTradingSymbol>EXBT</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001072252</rptOwnerCik>
            <rptOwnerName>MERITAGE INVESTMENT PARTNERS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1600 WYNKOOP STREET, SUITE 300</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DENVER</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common</value></securityTitle><transactionDate><value>2003-08-25</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>11250000</value></transactionShares><transactionPricePerShare><footnoteId id="F1"/></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>33750000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value><footnoteId id="F1"/></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">Meritage Investment Partners, LLC acquired the shares reported on this Form 4 as consideration for a guarantee extended by Meritage Private Equity Fund, L.P. for the benefit of Exabyte Corporation.  Such shares are held by the Reporting Person for the benefit of Meritage Private Equity Fund, L.P., Meritage Private Equity Parallel Fund, L.P. and Meritage Entrepreneurs Fund, L.P. (collectively, the &quot;Meritage Funds&quot;).  The Reporting Person is the sole general partner of each of the Meritage Funds.</footnote></footnotes><remarks/><ownerSignature><signatureName>/s/ Laura Beller, Managing Member</signatureName><signatureDate>2003-08-27</signatureDate></ownerSignature></ownershipDocument>

