I heard that Seagate has had some quality issues, which has hurt profits. This change could be to help resolve relations with large OEM companies like DELL, HP etc. which offer 3 year warrantees on the system when the drives only carried a 1 year warranty.
In effect the drive companies moved the liability to the computer companies when they moved to 1-year warrantee with their disk drives.
Did you go to the IMAX at the luxor? That is where I saw reloaded. It sucks sitting through the entire movie without food, drink or the ability to go to the bathroom.
I actually sent an e-mail to Bruce to discuss some things with blowfish about a year ago and he actually returned a very thoughtful and information e-mail. Most people as busy as him would not do so.
Perhaps there should be required training before posting on/.
The fact that most desktop/laptop and some server computers shipping today have no type of memory error detection or correction.
Back in the older days _all_ computers shipped with at least parity memory. Today you get no checking unless you buy a workstation or server class machine.
Did you ever notice that when you build an IBM system on-line that they make it very clear that the system uses non-parity memory where other companies never mention this? I think they know that someday someone will bring forth litigation on this subject and they want to make sure everything was clearly stated.
Did you ever wonder how much data is corrupted my bad memory chips? Remember that memory sizes are increasing all the time so one would think that the probability for an error is higher.
Did you ever wonder why Apple didn't use ECC memory in their xserve rack mount server?
I don't think anyone will hire a lawyer for $10 to go against a spammer? I had to spend $300 just to get a lawyer to look over my employment agreement. If you loose the case, then you are out your time and a lot of money.
So in effect this is a nice way to let everyone know your e-mail in my opinion.
The article states that printers are sold at a loss and that most consumers prefer to buy their ink cartridges at local retail stores (the profit maker). Because HP has presence in the retail arena this makes sense. However, Dell must believe that customers are willing to purchase supplies online for Dell branded printers, even knowing that most consumers prefer to do retail.
I don't know about everyone else, but I don't buy ink cartridges until I need them and when I do I run down to the store and pick one up because they are so freaking expensive. Unless you are monitoring your ink, you can't predict when you will need to order another one online and wait 3-5 days to get it.
As for HP cutting off sales to Dell? Seems par for the course for a company that hasn't made very many good decisions lately.
I may be wrong, but usually culling (i.e. portal, frustrum) is done in the game engine, not the display driver. Unless we are talking about a hardware zbuffer.
AMD Athlon.18u &.13u L1 Cache
64K Data
64K Instruction L2 Cache
128K with 64 bit interface
Intel P4.13u L1 Cache
8K Data
12K micro-op trace cache (instruction) L2 Cache
512K with 256 bit interface
Both chips run the L1 & L2 caches at core frequency.
The AMD may have a larger L1 cache, but the new P4 has more L1 + L2 with a lot more bandwidth to it. As always, your performance will vary based on your application.
Sorry I guess my post wasn't that clear. The crc and ecc I was referring to were used internally, I was not referring to the interface in that context. The last disk drive I worked on had:
30 Bytes PLO (Used for syncing the read channel) 512 bytes user data 4 bytes CRC 15 bytes ECC
Our sister development team that did EIDE did not do the 4 bytes of CRC so they didn't have the option of XOR'ing the lba in the CRC.
I haven't worked on drives for the last 2.5 years so my information is probably way out of date and varies between disk drive designs.
The whole point I was trying to make is more effort is put into protecting the users data on enterprise disk drives.
EIDE drives may be getting faster, but consider these points as well:
SCSI has parity checking on the bus, EIDE has nothing
SCSI drives have a higher MBTF and thus typically have a 5-year vs. EIDE 3-year warranty
SCSI drives use ECC for each sector as do EIDE, but some IDE drives do not do a 4 byte CRC on each sector so when ECC corrects it won't detect it misscorrected
SCSI drives typically XOR the logical block address into the CRC to detect the drive reading the wrong block
SCSI drives typically can handle more sock and vibe
SCSI drives are typically tested better
Yes, the delta between SCSI and EIDE drives performance seems to be shrinking, but I would take a 15k SCSI drive over a 7200RPM 8MB cache EIDE drive any day.
I believe you are inferring more than was stated. Schneier is trying to make the statement that any forums of anonymity are susceptible to unscrupulous activities. Large companies like AOL etc. probably keep a copy of all online transactions for just this reason. No one may be checking them, but they could be used for an audit trail if something is needed later.
I don't think Schneier's comments are alarming either, but I guess that is one way to get people to read the editorial you are posting about.
By all means marry. If you get a good wife, you'll be happy. If you get a bad one, you'll become a philosopher... and that is a good thing for any man.
I used to work for a disk drive company that used to design/build enterprise drives (SCSI) and we used to put clear covers on demo models for show. This worked fine until we started using MR heads (GMR used now) as MR heads are extremely sensitive to ESD (electrostatic discharge) and most plastics are insulators and thus they don't dissipate a charge (the best material for ESD is static dissipative materials which fall between an insulator and a conductor).
What happens it that the air rushing inside the case will create a difference in electrostatic potential and when it gets large enough zap, and there goes the head. Please be advised that you won't see this happen as the amount of ESD to fry a MR stripe is extremely (worlds most sensitive fuse) tiny and a human would not even feel it.
If these drives work very long at all I would be very surprised!
Slashdot Mirror
I have always used "Red Hate".
I had trouble getting the pumpkin pattern files so this may help others.
t
http://asleson.org/pumpkin_patterns.tar.gz.torren
This may because of poor quality.
I heard that Seagate has had some quality issues, which has hurt profits. This change could be to help resolve relations with large OEM companies like DELL, HP etc. which offer 3 year warrantees on the system when the drives only carried a 1 year warranty.
In effect the drive companies moved the liability to the computer companies when they moved to 1-year warrantee with their disk drives.
"Memory is like an orgasm. It's a lot better if you don't have to fake it."
-Seymour Cray
ICMP: The protocol that goes PING!
All the previous Mac OS X servers had nothing.
Did you go to the IMAX at the luxor? That is where I saw reloaded. It sucks sitting through the entire movie without food, drink or the ability to go to the bathroom.
Bruce Schneier is a Nazi
/.
I actually sent an e-mail to Bruce to discuss some things with blowfish about a year ago and he actually returned a very thoughtful and information e-mail. Most people as busy as him would not do so.
Perhaps there should be required training before posting on
He is richest who is content with the least, for content is the wealth of nature.
--Socrates
Why would they name it the same as the open source relational database firebird project?
Originally open sourced by Borland (commercial name interbase).
I always thought the company name was:
The law firm of Dewey Screw'em & Howe
The fact that most desktop/laptop and some server computers shipping today have no type of memory error detection or correction.
Back in the older days _all_ computers shipped with at least parity memory. Today you get no checking unless you buy a workstation or server class machine.
Did you ever notice that when you build an IBM system on-line that they make it very clear that the system uses non-parity memory where other companies never mention this? I think they know that someday someone will bring forth litigation on this subject and they want to make sure everything was clearly stated.
Did you ever wonder how much data is corrupted my bad memory chips? Remember that memory sizes are increasing all the time so one would think that the probability for an error is higher.
Did you ever wonder why Apple didn't use ECC memory in their xserve rack mount server?
I don't think anyone will hire a lawyer for $10 to go against a spammer? I had to spend $300 just to get a lawyer to look over my employment agreement. If you loose the case, then you are out your time and a lot of money.
So in effect this is a nice way to let everyone know your e-mail in my opinion.
my $0.02
From what I have read anti-bacterial soap may increase the problem of antibiotic resistant bacteria as well.
Something to think about.
Seagate 15k SCSI
Time for one revolution 4 msec
Average seek time 3.6 msec
Most rotational reordering algorithms minimize latency, not seek time.
This would only be a problem if his primary copy was bad at the same time.
Like he said it is not a perfect solution, but better than most I talk to. Many people don't even realize that disk drives can fail.
The article states that printers are sold at a loss and that most consumers prefer to buy their ink cartridges at local retail stores (the profit maker). Because HP has presence in the retail arena this makes sense. However, Dell must believe that customers are willing to purchase supplies online for Dell branded printers, even knowing that most consumers prefer to do retail.
I don't know about everyone else, but I don't buy ink cartridges until I need them and when I do I run down to the store and pick one up because they are so freaking expensive. Unless you are monitoring your ink, you can't predict when you will need to order another one online and wait 3-5 days to get it.
As for HP cutting off sales to Dell? Seems par for the course for a company that hasn't made very many good decisions lately.
I would suggest using www.w3.org to validate your html. This will ensure correct display on more browsers.
It is quite useful.
about the 'last' HD manufacturer in the U.S.,
Komag makes the media not the complete disk drive
It's a shame that people are willing to pay more for a pair of shoes then a disk drive to store their data on!
I may be wrong, but usually culling (i.e. portal, frustrum) is done in the game engine, not the display driver. Unless we are talking about a hardware zbuffer.
Just the facts:
.18u & .13u
.13u
AMD Athlon
L1 Cache
64K Data
64K Instruction
L2 Cache
128K with 64 bit interface
Intel P4
L1 Cache
8K Data
12K micro-op trace cache (instruction)
L2 Cache
512K with 256 bit interface
Both chips run the L1 & L2 caches at core frequency.
The AMD may have a larger L1 cache, but the new P4 has more L1 + L2 with a lot more bandwidth to it. As always, your performance will vary based on your application.
Sorry I guess my post wasn't that clear. The crc and ecc I was referring to were used internally, I was not referring to the interface in that context. The last disk drive I worked on had:
30 Bytes PLO (Used for syncing the read channel)
512 bytes user data
4 bytes CRC
15 bytes ECC
Our sister development team that did EIDE did not do the 4 bytes of CRC so they didn't have the option of XOR'ing the lba in the CRC.
I haven't worked on drives for the last 2.5 years so my information is probably way out of date and varies between disk drive designs.
The whole point I was trying to make is more effort is put into protecting the users data on enterprise disk drives.
Yes, the delta between SCSI and EIDE drives performance seems to be shrinking, but I would take a 15k SCSI drive over a 7200RPM 8MB cache EIDE drive any day.
Just my $0.02
I believe you are inferring more than was stated. Schneier is trying to make the statement that any forums of anonymity are susceptible to unscrupulous activities. Large companies like AOL etc. probably keep a copy of all online transactions for just this reason. No one may be checking them, but they could be used for an audit trail if something is needed later.
I don't think Schneier's comments are alarming either, but I guess that is one way to get people to read the editorial you are posting about.
By all means marry. If you get a good wife, you'll be happy. If you get a bad one, you'll become a philosopher... and that is a good thing for any man.
-anonymous
I used to work for a disk drive company that used to design/build enterprise drives (SCSI) and we used to put clear covers on demo models for show. This worked fine until we started using MR heads (GMR used now) as MR heads are extremely sensitive to ESD (electrostatic discharge) and most plastics are insulators and thus they don't dissipate a charge (the best material for ESD is static dissipative materials which fall between an insulator and a conductor).
What happens it that the air rushing inside the case will create a difference in electrostatic potential and when it gets large enough zap, and there goes the head. Please be advised that you won't see this happen as the amount of ESD to fry a MR stripe is extremely (worlds most sensitive fuse) tiny and a human would not even feel it.
If these drives work very long at all I would be very surprised!