Without hardware support it will only be possible to run modified OSs (such as Linux with appropriate patches) as is currently the case. With hardware support it will be possible to run unmodified OSs (such as Windows).
LVS on linux can be configured for maximum throughput through the network as return traffic does not pass back through the director. You can install a pair of directors that sync state in case one fails.
Linux-HA fails firewalls just fine.
Linux-HA will failover the IP address but it does not share state between the firewalls so has the potential to break long-running connections. OpenBSD can be configured to share the stateful inspection table using pfsync see here.
While it is true that the larger IPv6 address space has the potential to make address scanning far less effective, this is only effective if the worm scans the whole address space at random. If the worm first uses a method (e.g. whois) to discover pools of assigned address space from that allocated to ISPs there is surely little difference in the probability of discovering live addresses.
Red Hat will provide maintenance for RHEL for 7 years after General Availability. I agree with you that Red Hat charge too much for RHEL - a less expensive version with no email or phone support would be great. As it is, there is always CENTOS.
Please read a Cisco vulnerability announcement. You will see toward the base the procedure to get a free update that fixes the vulnerability if your equipment is not covered by smartnet. I quote:
Customers who purchase direct from Cisco but who do not hold a Cisco service contract and customers who purchase through third-party vendors but are
unsuccessful at obtaining fixed software through their point of sale should get their upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows.
* +1 800 553 2447 (toll free from within North America)
* +1 408 526 7209 (toll call from anywhere in the world)
* e-mail: tac@cisco.com
Please have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.
As I have already posted: If you want to read more details on the "Zettabyte File System" you can view the white papers on ZFS self-tuning [hp.com] and QOS [hp.com] as they contain far more detail than the marketing article given.
The filesystem has compression built in as an option to make storege more efficient. They currently use LZJB (fast but little reduction) compression but plan to add more powerfull but slower compression at a later date.
I am very impressed by some of the ideas coming from Sun regarding this file system:
"We're absolutely trying to make disk storage more like memory, and often use that analogy in our presentations. For example, when you add DIMMS to your computer, you don't run some 'dimmconfig' program or worry about how the new memory will be allocated to various applications; the computer just does the right thing. Applications don't have to worry about where their memory comes from.
Likewise with ZFS, when you add new disks to the system, their space is available to any ZFS filesystems, without the need for any further configuration. In most scenarios it's fairly straightforward for the software to make the unequivocably best choices about how to use the storage. If you want to tell the system more about how you want the storage used, you'll be able to do that too (eg. this data should be mirrored but that not; it's more important for this data to be accessed quickly but that can be slower). We hope that with relatively modern hardware, all but the most complicated and demanding configurations will be handled adequately without any administrator intervention." read more
According to the information given in this blog it is possible to "show how much space is used in each disk. If you want to reduce the amount of space in a pool by removing a disk, you could use this to choose the least-full disk, thus minimizing the time it will take to migrate that data to other disks".
If anyone wants to read more details on the "Zettabyte File System" they can view the white papers on ZFS self-tuning and QOS as they contain far more detail than the marketing article given.
Unfortunately not - it would only be free if you moored on the Thames. You are charged if you have a car on the road at any point in the charging zone. This means that if you live in the zone and just keep your car parked on the road you have to pay a (discounted) fee every day:(
I love Debian as well (we migrated to it from Red Hat for all our servers) but it seems that Red Hat are now developing up2date across releases: If you have a copy of Red Hat 9, type "up2date --help" and look at the second to last option:
(--upgrade-to-release= Upgrade to the channel specified)
I can't test this as there is no Red Hat 10 yet but it certainly seems as if Red Hat are trying to fill in their weaknesses.
Slashdot Mirror
It's a quote: see here.
Without hardware support it will only be possible to run modified OSs (such as Linux with appropriate patches) as is currently the case. With hardware support it will be possible to run unmodified OSs (such as Windows).
LVS on linux can be configured for maximum throughput through the network as return traffic does not pass back through the director. You can install a pair of directors that sync state in case one fails.
Linux-HA fails firewalls just fine.
Linux-HA will failover the IP address but it does not share state between the firewalls so has the potential to break long-running connections. OpenBSD can be configured to share the stateful inspection table using pfsync see here.
While it is true that the larger IPv6 address space has the potential to make address scanning far less effective, this is only effective if the worm scans the whole address space at random. If the worm first uses a method (e.g. whois) to discover pools of assigned address space from that allocated to ISPs there is surely little difference in the probability of discovering live addresses.
Red Hat will provide maintenance for RHEL for 7 years after General Availability. I agree with you that Red Hat charge too much for RHEL - a less expensive version with no email or phone support would be great. As it is, there is always CENTOS.
Please read a Cisco vulnerability announcement. You will see toward the base the procedure to get a free update that fixes the vulnerability if your equipment is not covered by smartnet. I quote:
Customers who purchase direct from Cisco but who do not hold a Cisco service contract and customers who purchase through third-party vendors but are unsuccessful at obtaining fixed software through their point of sale should get their upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows. * +1 800 553 2447 (toll free from within North America) * +1 408 526 7209 (toll call from anywhere in the world) * e-mail: tac@cisco.com Please have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.
But when the stem cells differentiate into the target tissue type, why don't their extracellular structures cause rejection then?
Bacula on Sourceforge and their own site. works very well as a networked backup system.
In countries that use the decimal point as a place seperator, the comma is used as a decimal point:
2.5 (English) = 2,5 (French)
Try running it with the new J2SE 5.0 - it greatly improved performance on both my systems (AMD64 and Pentium 4).
... and then there's the whole other world of prions.
As I have already posted: If you want to read more details on the "Zettabyte File System" you can view the white papers on ZFS self-tuning [hp.com] and QOS [hp.com] as they contain far more detail than the marketing article given.
The filesystem has compression built in as an option to make storege more efficient. They currently use LZJB (fast but little reduction) compression but plan to add more powerfull but slower compression at a later date.
"We're absolutely trying to make disk storage more like memory, and often use that analogy in our presentations. For example, when you add DIMMS to your computer, you don't run some 'dimmconfig' program or worry about how the new memory will be allocated to various applications; the computer just does the right thing. Applications don't have to worry about where their memory comes from. Likewise with ZFS, when you add new disks to the system, their space is available to any ZFS filesystems, without the need for any further configuration. In most scenarios it's fairly straightforward for the software to make the unequivocably best choices about how to use the storage. If you want to tell the system more about how you want the storage used, you'll be able to do that too (eg. this data should be mirrored but that not; it's more important for this data to be accessed quickly but that can be slower). We hope that with relatively modern hardware, all but the most complicated and demanding configurations will be handled adequately without any administrator intervention." read more
According to the information given in this blog it is possible to "show how much space is used in each disk. If you want to reduce the amount of space in a pool by removing a disk, you could use this to choose the least-full disk, thus minimizing the time it will take to migrate that data to other disks".
If anyone wants to read more details on the "Zettabyte File System" they can view the white papers on ZFS self-tuning and QOS as they contain far more detail than the marketing article given.
If you check the stats you may be surprised.
I have had good results from OpenNMS.
Did you look at OpenNMS?
Have you tried Jakarta Tapestry?
I take this to mean that they get the A record from the PTR and then do the A test - one of the IP addresses must be the IP address sending the mail.
Unfortunately not - it would only be free if you moored on the Thames. You are charged if you have a car on the road at any point in the charging zone. This means that if you live in the zone and just keep your car parked on the road you have to pay a (discounted) fee every day :(
I love Debian as well (we migrated to it from Red Hat for all our servers) but it seems that Red Hat are now developing up2date across releases: If you have a copy of Red Hat 9, type "up2date --help" and look at the second to last option:
(--upgrade-to-release= Upgrade to the channel specified)
I can't test this as there is no Red Hat 10 yet but it certainly seems as if Red Hat are trying to fill in their weaknesses.
>And, with no "apt-get dist-upgrade"
On Red Hat 9 type up2date -h
See the option: --upgrade-to-release=release-version
This is not yet mentioned in the man page but I'm sure that it will be used in the future to provide the same functionality as apt-get dist-upgrade