2012/1/4-2/6 [Computer/HW/Drives] UID:54281 Activity:nil | 1/4 I want to test how my servers behave during a disk failure and
a RAID reconstruction so I want to simulate a hardware failure.
How can I do this in Linux without having to physically pull
a drive? These disks are behind a RAID card and run Linux. -ausman
\_ According to the Linux RAID wiki, you might be able to use mdadm
to do this with something like the following:
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2011/9/14-10/25 [Computer/HW/Drives] UID:54173 Activity:nil | 9/13 Thanks to Jordan, our disk server is no longer virtualized. Our long
nightmare of poor IO performance should hopefully be over. Prepare for
another long nightmare of poor hardware reliability!
...
Just kidding! (I hope)
In any case, this means that cooler was taken out back and shot, and
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2011/2/18-4/20 [Computer/SW/Unix] UID:54044 Activity:nil | 2/18 Why does the system seem so sluggish lately?
\_ Slow NFS is basically always the answer. --toulouse
\_ Any truth to the rumor that soda will be decommissioned this summer?
\_ Absolutely none. Soda might go down temporarily while disks are
reorganized and stuff so soda doesn't suffer from such shitty
performance nearly as much, but no, we've gotta maintain NFS and
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2009/7/28-8/6 [Computer/HW/Drives] UID:53216 Activity:nil | 7/28 Does it make sense to defragment disks on VMWare? My 80GB disk
on VMWare isn't really using 80GB, it just uses what it needs.
Will defragment do anything to it?
\_ If you want to speed up disk operation in your VM, it's best to
defragment the disks in your VM, then defragment the disk on your
host machine where the VM files are.
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2009/6/1-3 [Computer/HW/CPU] UID:53068 Activity:high | 5/31 History of winners and losers by *popularity*:
VHS > Beta Max
USB2 > Firewire
x86 > PowerPC > Everything Else > DEC Alpha > Itanium
BlueRay > HDDvd
\_ It's too early to tell RE: "Blue"Ray. They may both turn out to be
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2009/5/11-18 [Computer/SW/Security, Computer/HW/Drives] UID:52982 Activity:nil | 5/10 I have large spare disks on several machines, all on same net.
How can I combine them into one big visible network file system?
\_ you want either a clustered file system (eww expensive) or look into
smoething like a distributed file system (afs, global fs).
\_ The startup I work for makes a distributed NAS product that's free
for the first four terabytes if you'd like to try it.
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2009/5/2-6 [Computer/HW/Laptop, Computer/HW/Drives] UID:52933 Activity:kinda low | 5/2 I have a 1Gbps switch. It is connected to a SANS RAID-1 with
two WD Green 1T that takes 1Gbps connection, as well as a laptop
that is also 1Gbps. Online benchmarks show *sustained* transfer
rate of about 1/2 of 1Gbps with the WD Green... cool!!! But
in practice, I'm only getting 68Mbps (read SANS->PC file transfer),
far below what I expected. The switch says both devices are using
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