2009年8月29日 星期六
2009年8月22日 星期六
沒有什麼事情不可能發生
資訊安全風險管理的6大盲點
連號稱永遠都不會倒的金融機構花旗銀行與AIG(美國國際集團)等都出現問題後，印證了一句名言：「任何事件都可能會發生。」愈是變動的年代，風險管理愈
顯重要。知名企業家郭台銘要大家「忘掉過去的經驗，做好基本功，走務實路線，即使是滿手爛牌也要認真打。」我想風險管理者的思考模式也應如此，在有限的資
源下，儘可能為組織做好萬全準備，以應付各種事件及難題。
2009年8月7日 星期五
新裝備
CPU: Intel Core(TM)2 Quad Processor Q9550
RAM: A-DATA 2G *4
MB: ASUS P5Q-E
Graphic Card: ASUS EAH4670
HD: HITACHI HDT721010SLA360 1TB *3
Power: Zippy GP2 500W
Case: CM590
HDD Mount Kit: Lain Li EX-H33
2009年8月1日 星期六
PCI-E x16 的向下相容性
http://en.wikipedia.org/wiki/PCI_Express
##
A PCIe card will fit into a slot of its physical size or bigger, but
may not fit into a smaller PCIe slot. Some slots use open-ended sockets
to permit physically longer cards and will negotiate the best available
electrical connection. The number of lanes actually connected to a slot
may also be less than the number supported by the physical slot size.
An example is a x8 slot that actually only runs at ×1; these slots will
allow any ×1, ×2, ×4 or ×8 card to be used, though only running at the
×1 speed. This type of socket is described as a ×8 (×1 mode)
slot, meaning it physically accepts up to ×8 cards but only runs at ×1
speed. The advantage gained is that a larger range of PCIe cards can
still be used without requiring the motherboard hardware to support the
full transfer rate—in so doing keeping design and implementation costs
down.
##
##
##
##
A PCIe card will fit into a slot of its physical size or bigger, but
may not fit into a smaller PCIe slot. Some slots use open-ended sockets
to permit physically longer cards and will negotiate the best available
electrical connection. The number of lanes actually connected to a slot
may also be less than the number supported by the physical slot size.
An example is a x8 slot that actually only runs at ×1; these slots will
allow any ×1, ×2, ×4 or ×8 card to be used, though only running at the
×1 speed. This type of socket is described as a ×8 (×1 mode)
slot, meaning it physically accepts up to ×8 cards but only runs at ×1
speed. The advantage gained is that a larger range of PCIe cards can
still be used without requiring the motherboard hardware to support the
full transfer rate—in so doing keeping design and implementation costs
down.
##
##
- a PCIe card will physically fit (and work correctly) in any slot
that is at least as large as it is (e.g., an ×1 sized card will work in
any sized slot); - a slot of a large physical size (e.g., ×16) can be wired
electrically with fewer lanes (e.g., ×1, ×4, or ×8) as long as it
provides the power and ground connections required by the larger
physical slot size.
##
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