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Who makes good hard drives? | by woodchip | 2003-11-06 19:08:31 |
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You've never heard of infant mortality? | by Slamlander | 2006-11-19 12:55:59 |
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Promise? | by Myke | 2003-11-06 23:10:00 |
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>snirk< hehe build a bootable array | by Slamlander | 2003-11-06 23:15:57 |
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Do you know what you're talking about? | by Myke | 2006-11-19 12:55:59 |
| My, my, such a reaction... I do know the facts |
by Slamlander |
2003-11-07 00:12:01 |
and I was on the Linux RAID mailing list and I actually built a Linux box and beta tested the procedure you are talking about. The early version of that HOW-TO only applied to RAID1.
There are several ways to set up a system that mounts it's root filesystem on a RAID device. Some distributions allow for RAID setup in the installation process, and this is by far the easiest way to get a nicely set up RAID system.
Newer LILO distributions can handle RAID-1 devices, and thus the kernel can be loaded at boot-time from a RAID device. LILO will correctly write boot-records on all disks in the array, to allow booting even if the primary disk fails.
The author does not yet know of any easy method for making the Grub boot-loader write the boot-records on all disks of a RAID-1. Please share your wisdom if you know how to do this.
Another way of ensuring that your system can always boot is, to create a boot floppy when all the setup is done. If the disk on which the /boot filesystem resides dies, you can always boot from the floppy. On RedHat and RedHat derived systems, this can be accomplished with the mkbootdisk command.
- What's the recovery process when a drive dies?
- Is your RAID5 array bootable? I think not.
- have you powered down one of the array members and then tried the recovery process?
- >snirk< booting from floppy is an acceptable solution? ... since when?
- There is nothing wrong with using an off-board processor. In fact it's a performance enhancement. Those guys who made that argument were talking out of their a$$. The key assumption they made, to bolster their weak arguments, was that the off-board processor was always archaic and slower. In reality, those arguments are as archaic as RISC vs CISC. In fact, all such *modern* processors are more than capable of saturating the bus. The only modern limitation is the speed of the bus beit hardware or software.
- The real benefit of RAID isn't performance, it's reliability. Performance enhancements are an added side-benefit. However, they should not be made at the expense of reliability.
- I have personally tried every software RAID configuration under Linux, Windows, Solaris/Veritas, and HP/ServiceGuard. All suffer from reliability problems, finikey installs, lack of reliable recovery procedures.
BTW, I strongly suggest that you read your own references. You also might try calming down a tad.
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