QUICK INSTALL AND SETUP PROCEDURE (C) Copyright IBM Corp., 1987 This file has been included to get you started using the IBM 3363 Optical disk software as quickly as possible. It is meant to supplement, not replace, the Optical Disk Guide to Operations. TASK 1: COPY FILES TO THE DISK YOU USE TO BOOT DOS Copy all the files included on your IBM 3363 Optical Disk Drive File System Driver Diskette to the disk you use to boot DOS. TASK 2: DECIDE HOW YOU WILL USE THE OPTICAL DISK Select one of the two PC program types below that best matches the software that you will use most to read and write data on the optical disk. Type A: Most PC programs such as word processors, spreadsheets, the DOS BACKUP, RESTORE, and COPY commands, and BURT3363. If you just want to get your optical disk working quickly, assume you have a Type A PC program. Type B: PC programs that read and write records in a random fashion such as data base programs that update data bases and accounting programs. TASK 3: SET UP THE PARAMETERS IN CONFIG.SYS AND AUTOEXEC.BAT o If you have a Type A PC program, then do the following: 1. Add a line in your CONFIG.SYS file that reads: DEVICE=ECYDDX.SYS 2. Then add a last line in your AUTOEXEC.BAT file that reads: IBM3363 o If you have a Type B PC program, then do the following: 1. Add a line in your CONFIG.SYS file that reads: DEVICE=ECYDDX.SYS FILES=6 2. Then add a last line in your AUTOEXEC.BAT file that reads: IBM3363 xx=1000 ff=6 An extent is an area of the optical disk that contains data that has changed. Since the optical disk is a write-once device, this changed area becomes fragmented from the main body of data. The optical disk may permanently consume up to 2 extents per update-in-place of any record for the life of a file. To estimate the "xx" parameter, estimate the number of updates to any of the records you will ever make to the most active file on your disk and multiply by two. For example, if a file will be used for one year, once a week, with 5 records modified at each up- date, it can use up to 52 x 5 x 2 or 520 extents (xx=520). Use the UTIL3363 PROMOTE command with the "no share" option to create a new version of a file that has fewer extents than the original version. Be sure to follow the instructions in the DOS manual and instructions for any PC program you use that instruct you about what to put into the CONFIG.SYS file. For example, you may use application programs that instruct you to modify the DOS FILES or BUFFERS parameters in CONFIG.SYS. Use these numbers instead of the default values for the corresponding parameters as you set up the optical disk software. (See page 4-8 of the IBM 3363 Guide to Operations.) TASK 4: USE THE OPTICAL DISK Now, when you re-boot, the IBM 3363 optical disk software will be automatically loaded with the setup that you chose. The way you typed the entries in CONFIG.SYS and AUTOEXEC.BAT will determine the way the optical disk works for you. Try storing and retrieving data with the optical disk. TASK 5: IMPROVE THE OPTICAL DISK DRIVE SETUP PARAMETERS You may want to change the way the optical disk software works or uses your PC memory, based on how you see it work- ing. Your software setup may have to be changed if some of these things happen: o If you receive the message "Disk Full" or "Invalid Path or Filename", you may be frequently updating large data- bases and your "extents" (xx) parameter is too low. Try increasing the value of your "xx" parameter for this type of application. You may also use the UTIL3363 PRO- MOTE command with the "no share" option to create a new version of a file that has fewer extents than the original version. o If you receive the message "Access Denied", you may have an application that requires a large number of "concur- rent opens". The "oo" parameter may not be set high enough, so try increasing it. o You may be able to improve the performance of, or rate, that the optical disk reads and writes data. Three IBM3363 parameters, buffers (bb), input cache (ic), and output cache (oc), may be used to help you improve per- formance. Existing programs that read and write blocks 512 bytes in size (or smaller) may work faster with input cache (ic) and output cache (oc) set. Try setting the value of each to 10 in the last line of AUTOEXEC.BAT. For example: IBM3363 ic=10 oc=10 Please read Section 4 of the Optical Disk Guide to Oper- ations for complete details. o You may be able to reduce the amount of PC memory the optical disk software uses, if your use of the optical disk software requires less memory than the default setup. Use the DOS CHKDSK command to display the space used on your DOS system disk, which also shows space available in PC memory. Then, boot DOS without the optical disk software. Use the DOS CHKDSK command again to display the space used on your DOS system disk and in PC memory. The differ- ence in available PC memory is the amount of memory used by the optical disk software. If you find that you have used more memory than you would like, you may want to lower your original parameter values. To do this, use EDLIN or another text editor program to modify the setup parameters you have specified or left as defaults in CONFIG.SYS and AUTOEXEC.BAT. Use the section in the Optical Disk Guide to Operations called "Performance Tuning Guidelines" for help. DATA PROTECTION If you receive a write fault error writing drive d: Abort, Retry, Fail? message, or a read fault error reading drive d: Abort, Retry, Fail? message, initiate the retry option. If three successive retries are attempted and you are still getting failures, contact your service representative. If, after inserting a cartridge, you note that the available space is zero(0) bytes, but you think that the cartridge should have more space available, then it is possible that a non-recoverable hardware error was encountered while mounting the volume. Try re-inserting the cartridge, or try the cartridge with a different 3363. You may still attempt to read the data on the cartridge and perform directory functions until it is necessary to obtain more space for these directory functions. The above problems could be caused by drive failures, disk damage or possibly excessive disk contamination and service by an IBM authorized representative is recommended. COPY-PROTECTED SOFTWARE ON THE OPTICAL DISK Copy-protected programs typically have device-dependent characteristics that require them to be executed from the device for which the program's author designed them. FINALLY: FOR PROGRAM DEVELOPERS You can write applications suited particularly for the IBM3363 optical disk drive. Such programs should read and write large blocks of data in 512 byte increments on 512 byte boundaries relative to the beginning of the file. A maximum block size of 64K bytes should be used.