home *** CD-ROM | disk | FTP | other *** search
-
- ÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕ
- COMPARISON BETWEEN DOS FORMAT, FDFORMAT 1.8 AND 2M/2MF 1.3
- ÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕÕ
-
- 2M is not only the highest capacity formatter at this moment, but
- also 2M diskettes are the faster ones. This test will show it to you.
- Note that some absolute results may slightly vary from one computer to
- another, but the relation between formatter programs doesn't vary. If
- you decide to use 2M, you will realize that default formats (820/1476K
- and 984/1804K) are also as reliable as DOS standard 360-1.2-720-1.44.
-
-
- 1. - MAXIMUM STORAGE AFTER FORMAT.
- ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ
- Physical limits are 1,025,000 for 5¨-DD (with 82 tracks) and 1,708,224
- bytes in 5¨-HD. In 3´-DD (high density controller card at 300 Kbit/sec)
- the limit is 1,230,000 bytes; in 3´-HD, 2,050,000 bytes.
-
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒø
- ≥ Double Density ≥ High Density ≥
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒø
- ≥ FORMAT (40/80t) ≥ 368,640 (360K) ≥ 1,228,800 (1,200K) ≥ ≥
- ≥ FDFORMAT (82t) ≥ 839,680 (820K) ≥ 1,511,424 (1,476K) ≥ 5.25 ≥
- ≥ 2MF /F (82t) ≥ 839,680 (820K) ≥ 1,511,424 (1,476K) ≥ ≥
- ≥ 2MF /M (82t) ≥ 923,648 (902K) ≥ 1,595,392 (1,558K) ≥ (5¨) ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒ¥
- ≥ FORMAT (40/80t) ≥ 737,280 (720K) ≥ 1,474,560 (1,440K) ≥ ≥
- ≥ FDFORMAT (82t) ≥ 839,680 (820K) ≥ 1,763,328 (1,722K) ≥ 3.5 ≥
- ≥ 2MF /F (82t) ≥ 1,007,616 (984K) ≥ 1,847,296 (1,804K) ≥ ≥
- ≥ 2MF /M (82t) ≥ 1,091,584 (1,066K) ≥ 1,931,254 (1,886K) ≥ (3´) ≥
- ¿ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒŸ
-
-
- 2. - PERFORMANCE AT DOS LEVEL.
- ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ
- In order to compare the real performance of different diskette formats,
- here are the results of a simple test. To simplify, only 3.5-HD diskette
- results are shown. The TEST directory of hard disk contained two files of
- 256 Kb, 3 files of 128 Kb, 4 files of 64 Kb, 5 files of 32 Kb, 6 files of
- 16 Kb and 1 file of 15.5 Kb, totalling 1423.5 Kb on 21 files.
-
- Write test: COPY C:\TEST\*.* B:
- Read test: COPY /B B:\*.* NUL
-
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒø
- ≥ Disk Size ≥ 1.44 ≥ 1.44 ≥ 1.64 ≥ 1.72 ≥ 1.80 ≥ 1.88 ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ¥
- ≥ Formatter ≥ FORMAT ≥FDFORMAT ≥FDFORMAT ≥FDFORMAT ≥ 2MF ≥ 2MF ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ¥
- ≥ Write time ≥ 1:17.27 ≥ 1:06.72 ≥ 1:00.74 ≥ 1:27.05 ≥ 1:15.30 ≥ 1:23.93 ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ¥
- ≥ Read time ≥ 0:59.82 ≥ 0:48.50 ≥ 0:44.11 ≥ 1:05.69 ≥ 0:43.78 ≥ 0:54.16 ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ¥
- ≥ Free space left≥ 0 ≥ 0 ≥ 203,776 ≥ 287,744 ≥ 370,688 ≥ 454,656 ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ¥
- ≥ Write (Kb/sec) ≥ 18.42 ≥ 21.34 ≥ 23.44 ≥ 16.35 ≥ 18.90 ≥ 16.96 ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ¥
- ≥ Read (Kb/sec) ≥ 23.80 ≥ 29.35 ≥ 32.27 ≥ 21.67 ≥ 32.51 ≥ 26.28 ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒ¥
- ≥ Kb/sec average ≥ 21.11 ≥ 25.35 ≥ 27.86 ≥ 19.01 ≥ 25.71 ≥ 21.62 ≥
- ≥ Relative Index ≥ 100.00 ≥ 120.09 ≥ 131.98 ≥ 90.05 ≥ 121.79 ≥ 102.42 ≥
- ¿ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒŸ
-
- Notes:
- - The test was executed on MS-DOS 6.2 with only 2M and FDREAD in memory.
- - /B switch is necessary to COPY binary files onto character device as NUL.
- - Reading from hard disk takes 5.5 sec (measured with the command COPY /B
- C:\TEST\*.* NUL), this time was subtracted from write test's time.
- - Diskette drive motor was on when COPY started.
- - FDFORMAT diskettes were formatted with /X:2 and /Y:3 switches.
-
-
- 3. - PERFORMANCE AT FULL-TRACK ACCESS LEVEL.
- ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ
- This results are obtained with the FLOPDTR (Floppy Data Transfer Rate)
- utility, which reads/writes a complete diskette in whole-track blocks.
- All statistics shown are in Kb/sec. The physical limits are 36,62 Kb/sec
- at 300 Kbit/sec (5¨-DD and 2M 3´-DD) and 61,03 Kb/sec at 500 Kbit (5¨-HD
- and 3´-HD).
-
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒø
- ≥ Double Density ≥ High Density ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¥
- ≥ Read Write ≥ Read Write ≥
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒø
- ≥ FORMAT (40/80t) ≥ 18.16 18.16 ≥ 30.13 30.13 ≥ ≥
- ≥ FDFORMAT (40/80t) (*) ≥ 22.11 22.12 ≥ 39.73 39.73 ≥ 5.25 ≥
- ≥ FDFORMAT (82t) (**) ≥ 25.00 25.00 ≥ 25.26 25.23 ≥ ≥
- ≥ 2MF /F (82t) ≥ 25.04 25.00 ≥ 46.33 46.33 ≥ (5¨) ≥
- ≥ 2MF /M (82t) ≥ 16.49 16.49 ≥ 28.50 28.47 ≥ ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒ¥
- ≥ FORMAT (40/80t) ≥ 15.05 15.05 ≥ 30.14 30.14 ≥ ≥
- ≥ FDFORMAT (40/80t) (*) ≥ 19.32 19.32 ≥ 39.58 39.53 ≥ 3.5 ≥
- ≥ FDFORMAT (82t) (**) ≥ 21.78 21.75 ≥ 24.79 24.79 ≥ ≥
- ≥ 2MF /F (82t) ≥ 25.72 25.76 ≥ 48.49 48.50 ≥ (3´) ≥
- ≥ 2MF /M (82t) ≥ 16.25 16.25 ≥ 28.74 28.77 ≥ ≥
- ¿ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒŸ
- (*) DOS standard formats (360-720-1.2-1.44) and best /X and /Y.
- (**) Maximum capacity formats (820-1.48-1.72) and best /X and /Y.
-
-
- 4. - FORMAT TIME.
- ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒø
- ≥ Double Density ≥ High Density ≥
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒø
- ≥ FORMAT (40/80t) ≥ 0:37 ≥ 1:13 ≥ ≥
- ≥ FDFORMAT (40/80t) (*) ≥ 0:42 ≥ 1:24 ≥ 5.25 ≥
- ≥ FDFORMAT (82t) (**) ≥ 1:28 ≥ 1:52 ≥ ≥
- ≥ 2MF /F (82t) ≥ 1:26 ≥ 1:29 ≥ (5¨) ≥
- ≥ 2MF /M (82t) ≥ 2:37 ≥ 2:38 ≥ ≥
- √ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒ¥
- ≥ FORMAT (40/80t) ≥ 1:24 ≥ 1:34 ≥ ≥
- ≥ FDFORMAT (40/80t) (*) ≥ 1:38 ≥ 1:42 ≥ 3.5 ≥
- ≥ FDFORMAT (82t) (**) ≥ 1:46 ≥ 2:17 ≥ ≥
- ≥ 2MF /F (82t) ≥ 1:39 ≥ 1:47 ≥ (3´) ≥
- ≥ 2MF /M (82t) ≥ 2:51 ≥ 3:22 ≥ ≥
- ¿ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒŸ
- (*) DOS standard formats (360-720-1.2-1.44) and best /X and /Y.
- (**) Maximum capacity formats (820-1.48-1.72) and best /X and /Y.
-
-
- 5. - NOTE.
- ƒƒƒƒƒƒƒƒƒƒ
- The /X and /Y switches of FDFORMAT used during all this tests are
- listed here:
- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒø
- ≥ /X /Y ≥
- ⁄ƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒƒ¥
- ≥ 5¨-DD ≥ 1 ≥ 3 ≥
- ≥ 5¨-HD ≥ 2 ≥ 3 ≥
- ≥ 3´-DD ≥ 1 ≥ 2 ≥
- ≥ 3´-HD ≥ 2 ≥ 3 ≥
- ¿ƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒŸ
-