EXHIBIT (10)(i) 


               PROMISSORY NOTE


U.S. $1,000,000.00           September 16, 1997


     FOR VALUE RECEIVED, nSTOR TECHNOLOGIES, INC., a Delaware corporation
(hereinafter referred to as the "Maker"), promises to pay to the order of H.
IRWIN LEVY (hereinafter referred to as the "Payee"), the principal sum of ONE
MILLION AND NO/100 DOLLARS (U.S.$1,000,000.00), or so much thereof as shall
have been advanced and/or readvanced by the Payee to the Maker and shall then
be outstanding, together with interest thereon as hereinafter set forth.

     I.   Interest.  During the period commencing on the date
hereof and ending on and including the Maturity Date of this Note, the
principal balance outstanding hereunder shall bear interest at a floating
rate equal to the "Wall Street Journal Prime Rate" (as said term is
hereinafter defined) plus one and one-half percent (1.5%) per annum. 
Interest computed at such rate shall be payable monthly in arrears on the 1st
day of each month during the term of this Note, commencing on the 1st day of
October, 1997.  As used herein, the term "Wall Street Journal Prime Rate"
shall mean and refer to the so-called prime rate of interest as published by
the Wall Street Journal from time to time.  In the event that the Wall Street
Journal shall cease to be published or shall cease to publish the prime rate
of interest, then, in such event, the term "Wall Street Journal Prime Rate"
shall be deemed to mean and refer to the prime rate of interest as published
by any other publication selected by the holder of this Note in the exercise
of such holder's reasonable discretion.

     II.  Maturity Date.  Unless sooner paid, the Maker agrees to
pay the entire outstanding principal balance of the indebtedness evidenced
by this Note together with all accrued but unpaid interest thereon on the 1st
day of March 1998 (the "Maturity Date").

     III. Prepayment.  DURING THE FIRST SIXTY (60) DAYS OF THE TERM
OF THIS NOTE, MAKER SHALL BE PROHIBITED FROM MAKING ANY PAYMENT(S) OR
PREPAYMENT(S) ON ACCOUNT OR IN RESPECT OF THE INDEBTEDNESS EVIDENCED BY THIS
NOTE IF, AS A RESULT OF OR FOLLOWING ANY SUCH PAYMENT OR PREPAYMENT, THE
OUTSTANDING PRINCIPAL BALANCE OF THE INDEBTEDNESS EVIDENCED BY THIS NOTE
SHALL BE REDUCED TO AN AMOUNT WHICH IS LESS THAN FIVE HUNDRED THOUSAND AND
NO/100 DOLLARS ($500,000.00).  Thereafter, Maker shall have the right to
prepay the indebtedness evidenced by this Note in whole or in part at any
time without penalty or premium.

     IV.  [Intentionally Deleted]. 

     V.   Default, Etc.  The occurrence of any one or more of the
following events, circumstances, or conditions shall constitute a default
hereunder:  (i) failure of the Maker to pay to the Payee promptly, on the
date when the same shall become due (whether at scheduled maturity, upon
acceleration or otherwise) any portion of the principal sum outstanding
hereunder or any installment of interest thereon or any other sum which may
at any time be or become due and payable under this Note and the continuation
of such failure to pay for a period of ten (10) days; or (ii) the occurrence
of any other default under this Note or any other document, instrument,
agreement or security agreement executed by Maker to or with Payee in
conjunction herewith and the continuation of such default following the
giving of any notice and/or the expiration of any grace period which may be
required and/or provided for herein or therein; or (iii) the occurrence of
any default (other than a default on the part of First Union National Bank
of Florida) under that certain Revolving Credit and Security Agreement dated

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as of the 29th day of May, 1997 (the "First Union Loan Agreement"), by and
between nStor Corporation, Inc. and First Union National Bank of Florida; or
(iv) the occurrence of any default (other than a default on the part of First
Union National Bank of Florida) under any promissory note, mortgage and/or
other loan, financing and/or security document or agreement referred to in,
and/or executed contemporaneously and/or in conjunction with, the First Union
Loan Agreement; or (v) the occurrence of any event, act or omission on the
part of, or with respect to, Maker, nStor Corporation, Inc. or any of their
respective subsidiaries or affiliates, which would constitute a default or
event of default under the First Union Loan Agreement; or (vi) the filing or
institution by or against Maker or nStor Corporation, Inc. of any petition
or proceeding under any state or federal bankruptcy, insolvency or other
similar law, statute, etc.; or (vii) the occurrence of any material adverse
change in the condition, financial or otherwise, of Maker or nStor
Corporation, Inc.  Upon or at any time after the occurrence of any such
default, the indebtedness evidenced by this Note and/or any note(s) or other
obligation(s) which may be taken in renewal, extension, substitution, or
modification of all or any part of the indebtedness evidenced hereby and all
other obligations of the Maker to the Payee, howsoever created and existing,
shall immediately become due and payable without demand upon or notice to the
Maker, and the Payee shall be entitled to exercise the other remedies set
forth in herein and/or as provided by law.

     VI.  Interest on Delinquent Payments.  In the event that Maker
shall fail to pay any installment of interest hereunder within five (5)
business days following the date upon which such installment shall have first
become due and payable, then, in such event, in addition to any and all other
rights and remedies available to Payee hereunder, Payee shall be entitled to
receive from Maker, and Maker shall be obligated to pay to Payee, interest
on such unpaid installment computed from the original due date of such
installment at the rate set forth in Paragraph I above, provided, however,
that upon and following the occurrence of any default under this Note
(including any default resulting from the continuation of Maker's failure to
pay any installment of interest following the expiration of the ten [10] day
grace period referred to in Clause [i] of Paragraph V above), interest on
such unpaid installment of interest and on the outstanding principal balance
of the indebtedness evidenced by this Note shall be computed at the Default
Rate set forth in Paragraph XIII below.

     VII. Setoff, Etc.  Upon the occurrence and during the
continuance of any default hereunder, the Payee is authorized, without notice
to the Maker (the giving of notice being expressly waived by the Maker) to
set off and apply any indebtedness owing by the Payee to the Maker against
the indebtedness evidenced by this Note, although such indebtedness then be
contingent or unmatured.  The Payee agrees to notify the Maker after any such
setoff and application; provided, however, the failure to give such notice
shall not affect the validity of such setoff and application.  The rights of
the Payee under this Paragraph VII are in addition to other rights and
remedies which the Payee may have.

     VIII.     Transfer of Note, Etc.  The Payee may transfer this Note
and deliver to the transferee(s) all or any of the property then held by the
Payee as security for the indebtedness evidenced by this Note and the
transferee(s) shall thereupon become vested with all the powers and rights
herein given to the Payee with respect thereto; and the Payee shall
thereafter be forever relieved and fully discharged from any liability or
responsibility in the matter, but the Payee shall retain all rights and
powers hereby given with respect to any property not so transferred.

     IX.  Waiver of Presentment, Etc.  The Maker hereby waives
presentment for payment, demand, notice of dishonor and protest and agrees
that (a) any Collateral, lien and/or right of setoff securing any
indebtedness evidenced by this Note may, from time to time, in whole or in
part, be exchanged or released, and any person liable on or with respect to

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this Note may be released -- all without notice to or further reservations
of rights against the Maker, any endorser, surety or guarantor and all
without in any way affecting or releasing the liability of the Maker, any
endorser, surety or guarantor, and (b) none of the terms or provisions hereof
may be waived, altered, modified or amended except as the Payee may consent
thereto in writing.

     X.   Expenses, Etc.  The Maker hereby agrees to pay all
out-of-pocket costs and expenses, including reasonable attorneys' fees,
incurred by the Payee in the collection of the indebtedness evidenced by this
Note or in enforcing any of the rights, powers, remedies, and privileges of
the Payee hereunder whether or not suit be brought.

     XI.  Place of Payment, Etc.  Both principal and interest of 
this Note shall be payable in lawful currency of the United States of America
to the Payee at 100 Century Boulevard, West Palm Beach, Florida 33417, or
such other address designated by Holder from time to time, in immediately
available funds without deduction for or on account of any present or future
taxes, duties or other charges levied or imposed on this Note, the proceeds
hereof, or on the Maker or holder hereof by any government, or any
instrumentality, authority or political subdivision thereof.  The Maker
agrees, upon the request of the Payee, to pay all such taxes (other than
taxes on or measured by net income of the holder thereof), duties, and other
charges in addition to the principal and interest evidenced by this Note.

     XII. Maximum Interest Rate, Etc.  Nothing contained in this 
Note or any other instrument between the parties hereto shall be deemed to
establish or require the payment of a rate of interest in excess of the
lesser of (a) twenty-four and one-half percent (24.5%) per annum or (b) the
maximum lending rate now or at any time hereafter permitted to be charged on
similar loans or extensions of credit made by any lender or creditor in the
State of Florida ("Maximum Rate").  In the event that the rate of interest
so contracted to be paid should exceed the Maximum Rate, whether as a result
of its terms, or as a result of a court of competent jurisdiction
interpreting this Note so as to include Conditional Interest as interest for
the purposes of usury, or as a result of fluctuation, acceleration of the
maturity hereof or otherwise, the rate of interest to be paid hereunder shall
be automatically reduced to the Maximum Rate and so much of any interest
reserved, charged or taken as would cause the same to exceed the Maximum Rate
shall be deemed not to be a credit against interest but rather a payment on
account of and be automatically credited against outstanding principal
evidenced hereby regardless of how the same may appear on the Payee's or the
Maker's books or records or any memoranda of whatever nature evidencing the
same; provided, however, no such application shall operate to cure or as a
waiver of any event of default occasioning acceleration.

     XIII.     Default Rate, Etc.  Following the occurrence and during 
the continuance of any default hereunder, accrued interest and outstanding
principal shall bear interest at an annual rate equal to the lesser of:  (a)
the greater of (i) the "Wall Street Journal Prime Rate"  plus five percent
(5%) per annum, or (ii) fifteen percent (15%) per annum, or (b) the maximum
lending rate then permitted under Florida law.  

     XIV. Governing Law, Etc.  This Note was executed and delivered 
by Maker to Payee in the state of Florida.  The Maker agrees that this Note
shall be deemed to have been made under and shall be governed by the laws of
the State of Florida in all respects, including matters of construction,
validity, and performance.  If any provision of this Note shall be deemed
unenforceable under applicable law, such provision shall be ineffective, but
only to the extent of such unenforceability, without invalidating the
remainder of such provision or the remaining provisions of this Note.  All
of the terms and provisions of this Note shall be applicable to and be
binding upon each and every maker, endorser, surety, guarantor, all other
persons who are or may become liable for the payment of the indebtedness

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evidenced hereby and their heirs, personal representatives, successors or
assigns (provided, however, this reference to "assigns" shall not be deemed
or construed to authorize or permit any assignment by the Maker).


                    nSTOR TECHNOLOGIES, INC., a
                    Delaware corporation

                    By:    Mark F. Levy,  President
                                     
(CORPORATE SEAL)
               

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