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18.104.22.168 Hard Drives
(Page 1 of 2)
Recently, with the dropping prices
of high-capacity hard disks (100 GB and up), theyve become a viable
off-line as well as on-line (via RAID) backup option. Want to send
data off-site? Many servers are already equipped with removable hard
drive bays. You can often identify them by the row of disc-sized panels
with handles, on the front of the server case. For under $100, you
can acquire a removable-drive bay, and a caddy that fits inside it,
to make your own hard disk-based removable media system. Buy a hard
disk of the appropriate capacity, install it in the caddy, and youre
set. However, this homebrew approach may not give you all
of the benefits of a server-removable drive system. For example, many
servers feature hot swappable hard drive subsystems allowing
drives to be removed and replaced on the system while it is running
without affecting system operation.
Figure 32: The mechanical and magnetic nature of a hard drive means they require careful handling.
Hard Drive Types
The most common types of hard drives today are IDE (used on most network workstations), and SCSI (used on most network servers), with IDE as the low-cost leader and SCSI as the performance leader. Hard drives are available in a variety of form factors (from PCMCIA-card sized drives used in notebooks, to 3.5 drives often used in servers), capacities and speeds.
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