In the beginning, personal computers used cassette tape drives. Then came floppy drives, followed by hard drives. And then came removable media drives such as SyQuest, Bernoulli, and – perhaps best know of all – Zip. Before Zip Iomega had made a name for itself with its, a lower cost alternative to SyQuest drives with their hard disk platters. Had established itself with a 44 MB 5-1/4″ cartridge drive system using the same 130mm platters found in hard drives. By contrast, Bernoulli cartridges had a floppy disk spinning at 3,000 rpm, using the to pull the disk’s surface toward the read-write head. Unfortunately, the original Bernoulli cartridge system used huge media, measuring about 8″ x 11″ (210 x 275 mm).

Bernoulli Box II used a smaller cartridge along with a drive that fit in a standard 5-1/4″ bay. Bernoulli drives were noted for their reliability, and they came in many different capacities. Beyond Floppy Disks Although Apple wasn’t the first to use 3.5″ floppy disks, it was the first to standardize on them instead of the older, larger 5-1/4″ floppies.

In the PC world, single-sided 3.5″ floppies held 360 KB of data, double-sided disks 720 KB. On Macs, the same disks stored 400 KB and 800 KB respectively. High-density (HD) 3.5″ floppies arrived in 1987, and both PCs and Macs used them to store 1.4 MB of information. The same year IBM introduced its DSED (Double Sided Extended Density), which never caught on. The market needed a removable media drive with more capacity than floppies but at a much better price than SyQuest. The Zip 100 Iomega brought its Zip drive and Zip disks to market in March 1995 with 100 MB capacity.

Java update for mac el capitan. Zip uses a cartridge a little larger and somewhat thicker than a 3.5″ floppy disk. It was also far faster than a floppy drive, which is part of what kept the competing from catching on – it had higher capacity than Zip but was far, far slower. (Interestingly, SuperDisk began as an Iomega project that they ditched in favor of Zip.

3M acquired the technology from Iomega and brought it to market.) With their relatively high capacity and low price (initially $20 per cartridge), Zip took off,. A few Zip disks could back up most hard drives in 1995; one Zip disk could hold a bootable system plus diagnostics. Zip was also a great way to send files out to a service bureau. Zip disks came preformatted for Macs or PCs, and either could be reformatted for the other platform using Iomega Tools. A Word of Warning The SCSI Zip drive allows you to choose one of two possible SCSI IDs, 5 or 6. SCSI ID 6 is rock solid, but when other devices on the SCSI bus are moving a lot of data. Avoid using SCSI ID 5 if at all possible.

How Fast (or Slow) Is It? In 2013, Lui Gough several different types of Zip drives on his AMD Sempton 3300+ powered PC running Windows XP SP3. Here are the average and maximum transfer rates by drive mechanism: • ATAPI Zip 100: 1.0 MB/s avg., 1.4 Mb/s max • USB Zip 100, bus powered: 0.7 MB/s avg., 0.8 MB/s max • SCSI Zip 100: 0.6 MB/s avg., 0.7 MB/s max • Parallel port Zip 100: 0.2 MB/s across the board Cam Giesbrecht ran benchmark tests on his, also comparing HD floppy and hard drive performance. His results: • floppy disk, writes @ 61.6 KB/s, reads @ 78.6 KB/s • SCSI Zip disk, writes @ 1084 KB/s, reads @ 1123 KB/s (50% higher than SCSI on PC) • internal Quantum hard drive, writes @ 1497 KB/s, reads @ 1850 KB/s • external Quantum hard drive, writes @ 1367 KB/s, reads @ 1367 KB/s The SCSI Zip drive performs better on this Mac and the one tested by Lui Gough on his Windows PC, in part because Macs were optimized for SCSI drives in those days while PCs were optimized for ATA drives. The Zip shows itself to be a decent backup medium, writing data at 70-80% of the write speed of the two tested hard drives. As for the floppy, there is no comparison. Zip stores 70x as much data and runs about 15x as fast.

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