Initial investigation: I rejected Iomega zip drives and Jazz
drives and also Sony LS-120 super floppies because they are too small.
The biggest drive in this category has a capacity of 1 Gbyte which means
it would take 8 steps to backup a hard drive; also recovery would be slower.
DLT tapes, with a capacity of 40 GBytes/tape, were rejected because the
cartridges are too big and the drives (~$1500) are too expensive.
|Travan tape||4 mm (DAT)||8 mm|
|Comes in 5, 8 and 14 GBytes/tape capacity (HP), 8 and 20 GBytes (Seagate)||24 Gbyte (HP DDS-3) (C1555B)
24 Gbyte (Sony DDS3 PCBACKER 9000)
|Exabyte Eliant 820 (14 Gbyte)
The rationale behind the difference in pricing for the drives and the
media between the Travan technology and the DAT technology has to do with
the tape tensioning mechanism. The DAT system puts the tape tensioning
in the drive, so the drive is more expensive; and the mechanism has to
be beefier because if it breaks, you've lost the drive. The Travan
technology puts the tape tensioner in the cartridge. It is more lightweight,
because if it breaks, you've lost just the cartridge which is no big deal.
Or so they say - I am cynical. In most businesses, drives are capital and media are expensed and it is typically easier to spend expense dollars than capital dollars. I'm just a dumb engineer, but in my mind, every dollar you spend is a dollar of lost profit.
HP: http://www.hp.com/tape/colorado/DesktopProductsSpecifications.html (Colorado Travan tapes)
HP Colorado Travan 5 Gbyte drive: P/N=C4354B $178 @ Egghead Media P/N=C4425D $284/10 @ Computer Stop
HP Colorado Travan 8 Gbyte drive: P/N= C4389B $319 @ Computer Stop Media P/N=C4429D $ 323/10 @ Egghead
HP Colorado Travan 8 Gbyte drive is $238 @ Egghead, almost a third less than Computer Stop.
HP Colorado Travan 14 Gbyte drive is $287 @ Egghead Media P/N= C4436D $165.21/5 @ Egghead
All of the following require a SCSI interface controller
An AHA2940 SCSI controller is about $196 @ Shoplet, a mail order house.
HP DDS3 24 Gbyte DAT drive $1139 @ Computer Stop Media is $21.90 @Egghead
HP DDS2 8GB Bare Internal drive $749.95 @ Computer Stop Media is $7.80 @ Egghead
Seagate 20 Gbyte Travan drive: STT220000A-RFT
Seagate 8 Gbyte travan drive STT28000A-RFT
Seagate Scorpion 8 Gbyte DAT drive $649 @ Computer Stop Media is $7.80 @ Egghead
Sony DDS3 PCBACKER 9000 INT 24GB DAT drive: $903.95 or $858 @ Egghead.
Ditto Max 7 Gbyte cartridges $34.00 @ Shoplet http://www.shoplet.com/hardware/db/386511.html
Exabyte is the only manufacturer of 8 mm tape drives, everybody else
OEMs from them.
Eliant 820 MSRP $1,580
Mammoth LT MRSP $1,617
Think about offsite storage of backups.
Think about virus scanning. Remember, you
must continually update your signature files.