THIS PROMISSORY NOTE REPLACES THAT CERTAIN PROMISSORY NOTE DATED OCTOBER 11,
                     2000 IN THE AMOUNT OF U.S. $750,000.00

                                 PROMISSORY NOTE


                                                               November 15, 2000
U.S. $1,050,000.00                                         San Diego, California


FOR VALUE  RECEIVED,  the  undersigned  nSTOR  TECHNOLOGIES,  INC.,  a  Delaware
corporation  with its  principal  place of business at 10140 Mesa Rim Road,  San
Diego, California, 92121 (hereinafter called "Maker"), hereby promises to pay to
the order of MLL Corp., a Florida  corporation whose principal place of business
is 100 Century Boulevard,  West Palm Beach,  Florida 33417  (hereinafter  called
"Payee"),  stated  above,  or at such other place as the Payee may  designate in
writing,  the sum of ONE MILLION AND FIFTY THOUSAND AND 00/100ths  U.S.  Dollars
(U.S.  $1,050,000.00) (the "Principal Amount"), plus interest on the outstanding
balance  of the  Principal  Amount at the rate of ten  percent  (10%) per annum,
payable quarterly,  from the date hereof until the date when said sum is paid in
full in accordance with the terms hereof.  The entire  Principal Amount plus all
accrued interest thereon shall be due and payable in full on January 31, 2002.

It is expressly  agreed that this  Promissory  Note  evidences a ONE MILLION AND
FIFTY THOUSAND AND 00/100ths U.S. Dollars (U.S. $1,050,000.00) revolving line of
credit.  The Principal  Amount which may be  outstanding  at any time under such
line of credit  shall not exceed ONE MILLION AND FIFTY  THOUSAND  AND  00/100ths
U.S. Dollars (U.S. $1,050,000.00).  However, this limitation shall not be deemed
to  prohibit  Payee  from  advancing  any sum,  which may,  in Payee's  sole and
exclusive discretion, be necessary or desirable in order to protect and preserve
the effect and  enforceability  of this Promissory  Note.  Within the limits and
subject to the terms and  conditions  hereof,  the Maker may  borrow,  repay and
re-borrow  under the revolving line of credit  evidenced by this Promissory Note
and all shall be subject to the terms and conditions of this Promissory Note.

Upon the failure by Maker to pay interest in full on or before the date when due
hereunder,  the entire unpaid amount of this Note shall thereupon be immediately
due and payable, and the Payee shall have all rights and remedies provided under
this Note.

Maker shall have the right, in Maker's  discretion at any time,  without payment
of premium or penalty,  to repay in whole or in part the unpaid  balance of this
Note.

This Note  shall be  governed  by and  construed  under the laws of the State of
Florida.  The exclusive  venue for any litigation in connection  with or arising
out of this Note  shall be Palm  Beach  County,  Florida,  and the Maker  hereby
consents and submits to the jurisdiction of the state and federal courts sitting
in Palm Beach County, Florida.

MAKER HEREBY KNOWINGLY,  VOLUNTARILY AND  INTENTIONALLY  WAIVES THE RIGHT IT MAY
HAVE TO A TRIAL BY JURY IN RESPECT OF ANY  LITIGATION  BASED HEREON,  OR ARISING
OUT OF, UNDER OR IN CONNECTION WITH THIS NOTE.


nSTOR TECHNOLOGIES, INC.


By:  /s/ W. David Wright
----------------------------
Name:   W. David Wright
Title:  Controller