Various articles relating to Windows2000/XP/2003 Encrypted File System:
Decrypting EFS - Winter 2000 issue of Win2000 Magazine
LabMice.net index of EFS articles
Wednesday, June 18, 2003
Tuesday, June 17, 2003
Really Large Cheap Storage
Promise's SX8000/RM8000 unit which holds (8) IDE drives in a RAID5 configuration, total cost for 1.5Tb of storage was $3.44/Gb.
Well, they also make an RM15000 unit ($4000) which holds (15) IDE drives. Figure (1) drive for the parity bit and (1) drive for a hot-spare and you have theoretical capacity of 3.17Tb at a cost of $2.62/Gb. Using the 160Gb drives (currently $160 each in bulk) you'll end up with a 2.03Tb array at a cost of $3.08/Gb.
FYI, the largest SCSI drive on the market is 180Gb at a cost of $1300 each, so figure the cabinet and hardware to hold the drives would be $2000, and total drive cost of $19500. Resulting cost for 2.28Tb of storage is $9.21/Gb -- which is 3x the cost of the equivalent IDE solution. But the SCSI solution is more suited for primary storage (speed, reliability, warranty).
Well, they also make an RM15000 unit ($4000) which holds (15) IDE drives. Figure (1) drive for the parity bit and (1) drive for a hot-spare and you have theoretical capacity of 3.17Tb at a cost of $2.62/Gb. Using the 160Gb drives (currently $160 each in bulk) you'll end up with a 2.03Tb array at a cost of $3.08/Gb.
FYI, the largest SCSI drive on the market is 180Gb at a cost of $1300 each, so figure the cabinet and hardware to hold the drives would be $2000, and total drive cost of $19500. Resulting cost for 2.28Tb of storage is $9.21/Gb -- which is 3x the cost of the equivalent IDE solution. But the SCSI solution is more suited for primary storage (speed, reliability, warranty).
Thursday, June 05, 2003
Gigabit Ethernet
Prepare for Gigabit Ethernet networking
By Brian M. Posey, TechRepublic, March 19, 2003 -- Good article explaining some of the pitfalls about the move to gigabit ethernet.
So I'm getting ready to switch over to Gigabit Ethernet both here at home and at work. Netgear makes an 8 port hub that is only $600 or so (NetGear 8-port Copper Gigabit Switch, GS508TNA) and the ethernet cards are only $125 or so. I've been doing some bench testing of read/write speeds to my local drives vs across the network, and even on an empty (just me and the server) ethernet segment I'm only seeing throughput of 2.0-2.5 Mb/sec when average over a 5 minute interval. The servers on the other hand are able to provide 8-20 Mb/sec reads and 4-12 Mb/sec writes (IDE drives, SCSI drives are 40-50 Mb/sec read and 6-10 Mb/sec writes).
My goal for the office is to switch over to gigabit between the hubs with gigabit to the servers.
By Brian M. Posey, TechRepublic, March 19, 2003 -- Good article explaining some of the pitfalls about the move to gigabit ethernet.
So I'm getting ready to switch over to Gigabit Ethernet both here at home and at work. Netgear makes an 8 port hub that is only $600 or so (NetGear 8-port Copper Gigabit Switch, GS508TNA) and the ethernet cards are only $125 or so. I've been doing some bench testing of read/write speeds to my local drives vs across the network, and even on an empty (just me and the server) ethernet segment I'm only seeing throughput of 2.0-2.5 Mb/sec when average over a 5 minute interval. The servers on the other hand are able to provide 8-20 Mb/sec reads and 4-12 Mb/sec writes (IDE drives, SCSI drives are 40-50 Mb/sec read and 6-10 Mb/sec writes).
My goal for the office is to switch over to gigabit between the hubs with gigabit to the servers.
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