From 151cdfe2c1fe93a1f0af51b51f160d766d9e1d08 Mon Sep 17 00:00:00 2001 From: Marc Fonvieille Date: Sun, 26 Jan 2003 12:51:14 +0000 Subject: [PATCH] Use quote tags where needed. While I'm there: addition of some non-breaking spaces. --- .../books/handbook/disks/chapter.sgml | 40 +++++++++---------- 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/en_US.ISO8859-1/books/handbook/disks/chapter.sgml b/en_US.ISO8859-1/books/handbook/disks/chapter.sgml index ddada33955..7c332345b1 100644 --- a/en_US.ISO8859-1/books/handbook/disks/chapter.sgml +++ b/en_US.ISO8859-1/books/handbook/disks/chapter.sgml @@ -1265,15 +1265,15 @@ scsibus1: x 12 mm) than 8mm cartridges. 4mm, like 8mm, has comparatively short head life for the same reason, both use helical scan. - Data throughput on these drives starts ~150kB/s, peaking at ~500kB/s. - Data capacity starts at 1.3 GB and ends at 2.0 GB. Hardware + Data throughput on these drives starts ~150 kB/s, peaking at ~500 kB/s. + Data capacity starts at 1.3 GB and ends at 2.0 GB. Hardware compression, available with most of these drives, approximately doubles the capacity. Multi-drive tape library units can have 6 drives in a single cabinet with automatic tape changing. Library - capacities reach 240 GB. + capacities reach 240 GB. - The DDS-3 standard now supports tape capacities up to 12 GB (or - 24 GB compressed). + The DDS-3 standard now supports tape capacities up to 12 GB (or + 24 GB compressed). 4mm drives, like 8mm drives, use helical-scan. All the benefits and drawbacks of helical-scan apply to both 4mm and 8mm drives. @@ -1290,21 +1290,21 @@ scsibus1: 8mm tapes are the most common SCSI tape drives; they are the best - choice of exchanging tapes. Nearly every site has an Exabyte 2 GB 8mm + choice of exchanging tapes. Nearly every site has an Exabyte 2 GB 8mm tape drive. 8mm drives are reliable, convenient and quiet. Cartridges are inexpensive and small (4.8 x 3.3 x 0.6 inches; 122 x 84 x 15 mm). One downside of 8mm tape is relatively short head and tape life due to the high rate of relative motion of the tape across the heads. - Data throughput ranges from ~250kB/s to ~500kB/s. Data sizes start - at 300 MB and go up to 7 GB. Hardware compression, available with + Data throughput ranges from ~250 kB/s to ~500 kB/s. Data sizes start + at 300 MB and go up to 7 GB. Hardware compression, available with most of these drives, approximately doubles the capacity. These drives are available as single units or multi-drive tape libraries with 6 drives and 120 tapes in a single cabinet. Tapes are changed - automatically by the unit. Library capacities reach 840+ GB. + automatically by the unit. Library capacities reach 840+ GB. - The Exabyte Mammoth model supports 12 GB on one tape - (24 GB with compression) and costs approximately twice as much as + The Exabyte Mammoth model supports 12 GB on one tape + (24 GB with compression) and costs approximately twice as much as conventional tape drives. Data is recorded onto the tape using helical-scan, the heads are @@ -1323,7 +1323,7 @@ scsibus1: QIC-150 tapes and drives are, perhaps, the most common tape drive - and media around. QIC tape drives are the least expensive "serious" + and media around. QIC tape drives are the least expensive serious backup drives. The downside is the cost of media. QIC tapes are expensive compared to 8mm or 4mm tapes, up to 5 times the price per GB data storage. But, if your needs can be satisfied with a half-dozen @@ -1339,8 +1339,8 @@ scsibus1: also use 1/4" wide tape are discussed separately. Tape libraries and changers are not available. - Data throughput ranges from ~150kB/s to ~500kB/s. Data capacity - ranges from 40 MB to 15 GB. Hardware compression is available on many + Data throughput ranges from ~150 kB/s to ~500 kB/s. Data capacity + ranges from 40 MB to 15 GB. Hardware compression is available on many of the newer QIC drives. QIC drives are less frequently installed; they are being supplanted by DAT drives. @@ -1373,20 +1373,20 @@ scsibus1: cartridge (4 x 4 x 1 inches; 100 x 100 x 25 mm). The cartridge has a swinging gate along one entire side of the cartridge. The drive mechanism opens this gate to extract the tape leader. The tape leader - has an oval hole in it which the drive uses to "hook" the tape. The + has an oval hole in it which the drive uses to hook the tape. The take-up spool is located inside the tape drive. All the other tape cartridges listed here (9 track tapes are the only exception) have both the supply and take-up spools located inside the tape cartridge itself. - Data throughput is approximately 1.5MB/s, three times the throughput of - 4mm, 8mm, or QIC tape drives. Data capacities range from 10 GB to 20 GB + Data throughput is approximately 1.5 MB/s, three times the throughput of + 4mm, 8mm, or QIC tape drives. Data capacities range from 10 GB to 20 GB for a single drive. Drives are available in both multi-tape changers and multi-tape, multi-drive tape libraries containing from 5 to 900 - tapes over 1 to 20 drives, providing from 50 GB to 9 TB of + tapes over 1 to 20 drives, providing from 50 GB to 9 TB of storage. - With compression, DLT Type IV format supports up to 70 GB + With compression, DLT Type IV format supports up to 70 GB capacity. Data is recorded onto the tape in tracks parallel to the direction @@ -1403,7 +1403,7 @@ scsibus1: AIT - AIT is a new format from Sony, and can hold up to 50 GB (with + AIT is a new format from Sony, and can hold up to 50 GB (with compression) per tape. The tapes contain memory chips which retain an index of the tape's contents. This index can be rapidly read by the tape drive to determine the position of files on the tape, instead of