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Search: Posts made by: Bill Todd
Forum: Storage & Hardrives February 12th 10, 08:05 PM Posted to comp.arch.storage
Replies: 10
Views: 1,483
Posted By Bill Todd
Disk optimization for multithreaded app.

On 2/11/2010 11:30 PM, wrote:
On Feb 11, 5:34 pm, Bill wrote:
Thanks - what you describe above I once knew as the supported way to
...
Forum: Storage & Hardrives February 11th 10, 11:34 PM Posted to comp.arch.storage
Replies: 10
Views: 1,483
Posted By Bill Todd
Disk optimization for multithreaded app.

On 2/11/2010 5:23 PM, wrote:
On Feb 11, 12:19 am, Bill wrote:
That's why I explicitly said NOT to do it that way. There at least used
to...
Forum: Storage & Hardrives February 11th 10, 11:26 PM Posted to comp.arch.storage
Replies: 10
Views: 1,483
Posted By Bill Todd
Disk optimization for multithreaded app.

On 2/11/2010 5:43 AM, Maxim S. Shatskih wrote:
Unix-style system-wide sync calls are a fourth (but I don't think
Windows offers them).

It does, FlushFileBuffers is fsync().

If you open...
Forum: Storage & Hardrives February 11th 10, 06:19 AM Posted to comp.arch.storage
Replies: 10
Views: 1,483
Posted By Bill Todd
Disk optimization for multithreaded app.

On 2/10/2010 6:50 AM, Maxim S. Shatskih wrote:
If I recall correctly, NT and its descendants (unlike Unix) flush dirty
data to disk when a file is closed and report any error then.

No.

...
Forum: Storage & Hardrives February 10th 10, 10:28 AM Posted to comp.arch.storage
Replies: 10
Views: 1,483
Posted By Bill Todd
Disk optimization for multithreaded app.

On 2/9/2010 1:03 PM, I Understand wrote:
Mine is a disk based backup/restore product. It is multithreaded,
which means many backups and restores are happening simultaneously.
The product has...
Forum: Storage & Hardrives November 18th 09, 05:15 AM Posted to comp.arch.storage
Replies: 1
Views: 715
Posted By Bill Todd
WD1200JB Issues

a12vman wrote:

....

Any suggestions on where to go next?

Restore the data from your backups, obviously. If you don't have any,
try a professional data restoration service if that's...
Forum: Storage & Hardrives November 17th 09, 10:24 PM Posted to comp.arch.storage
Replies: 6
Views: 1,057
Posted By Bill Todd
New to NAS, have idea, looking for software to do it.

Bob Meyers wrote:

....

My idea is this: If I have up to 100 PC's, often each one has many GB
of free disk space on the local disk drives. Is there any software
that would allow me to...
Forum: Storage & Hardrives September 20th 09, 10:09 PM Posted to comp.arch.storage
Replies: 8
Views: 904
Posted By Bill Todd
RAID level for personal archival?

mrvelous1 wrote:

....

By the time go through with all of these recommendations you will have
effectively built yourself a Data Center.

Not really - perhaps you got confused by the length of...
Forum: Storage & Hardrives September 19th 09, 03:56 AM Posted to comp.arch.storage
Replies: 8
Views: 904
Posted By Bill Todd
RAID level for personal archival?

Derrick Coetzee wrote:
Hi all,

I'm building a RAID solution for personal archiving (general large
things like raw photos, full disk backups, DVD rips, that sort of
...
Forum: Storage & Hardrives June 13th 09, 07:44 PM Posted to microsoft.public.windowsxp.security_admin,24hoursupport.helpdesk,comp.arch.storage
Replies: 13
Views: 1,392
Posted By Bill Todd
deleted mbr,boot sector

poster wrote:
On Jun 6, 8:46 am, "Ben Myers" wrote:
"poster" wrote in...
Forum: General June 12th 09, 06:26 PM Posted to comp.sys.ibm.pc.hardware.chips,comp.arch
Replies: 146
Views: 9,524
Posted By Bill Todd
Is Itanium the first 64-bit casualty?

Robert Myers wrote:
On Jun 11, 3:12 am, Terje Mathisen "terje.mathisen at tmsw.no"
wrote:
Robert Myers wrote:
It's no less a problem for Via than it is for anyone else. Power
...
Forum: Storage & Hardrives June 12th 09, 06:17 PM Posted to comp.arch.storage,comp.arch
Replies: 2
Views: 803
Posted By Bill Todd
disk error bursts

The frequency with which disk sectors become unreadable seems to have
remained relatively stable over the years, though one might hope that it
will decrease significantly with the expected move to...
Forum: General June 12th 09, 03:23 AM Posted to comp.sys.ibm.pc.hardware.chips,comp.arch
Replies: 146
Views: 9,524
Posted By Bill Todd
Is Itanium the first 64-bit casualty?

MitchAlsup wrote:
On Jun 11, 4:14 pm, Stephen Fuld
wrote:
MitchAlsup wrote:
The real question at hand is: why there are no x86s targeted at such a
low...
Forum: General June 11th 09, 12:16 PM Posted to comp.sys.ibm.pc.hardware.chips,comp.arch
Replies: 146
Views: 9,524
Posted By Bill Todd
Is Itanium the first 64-bit casualty?

Terje Mathisen wrote:
Robert Myers wrote:
It's no less a problem for Via than it is for anyone else. Power
consumption, not x86, ate Itanium, and it could eat x86, as well.

Power...
Forum: Storage & Hardrives May 30th 09, 01:21 AM Posted to comp.arch.storage
Replies: 4
Views: 729
Posted By Bill Todd
Raid5 vs Raid6 under degraded mode

Ed Wilts wrote:
On May 29, 3:46 am, howa wrote:
Assume a system with 9 SATA 1TB disks, and 1 hot spare.

They are targeted to config as Raid5 or Raid6.

If one of...
Forum: Storage & Hardrives April 26th 09, 05:09 PM Posted to comp.os.linux.development.system,comp.arch.storage
Replies: 32
Views: 2,194
Posted By Bill Todd
Unimpressive performance of large MD raid

wrote:
U comp.arch.storage Bill Todd prica:
So if you align cache page size with stripe size, you can benefit from it or
no?

If...
Forum: Storage & Hardrives April 26th 09, 03:37 AM Posted to comp.os.linux.development.system,comp.arch.storage
Replies: 32
Views: 2,194
Posted By Bill Todd
Unimpressive performance of large MD raid

wrote:
U comp.arch.storage Bill Todd prica:
So basically, if I say that stripe segment is 64kb, it means that when I
write 512kb of...
Forum: Storage & Hardrives April 25th 09, 09:28 PM Posted to comp.os.linux.development.system,comp.arch.storage
Replies: 32
Views: 2,194
Posted By Bill Todd
Unimpressive performance of large MD raid

wrote:

....

What matters is request *alignment*, not whether the size of the data in a
full stripe is a power of 2. This usually means request alignment...
Forum: Storage & Hardrives April 24th 09, 11:30 PM Posted to comp.os.linux.development.system,comp.arch.storage
Replies: 32
Views: 2,194
Posted By Bill Todd
Unimpressive performance of large MD raid

wrote:
U comp.arch.storage Bill Todd prica:
RAID3 implementation doesn't exist on 3Ware controllers...

I wasn't suggesting that it...
Forum: Storage & Hardrives April 24th 09, 08:48 PM Posted to comp.arch.storage
Replies: 3
Views: 647
Posted By Bill Todd
Raid suggestions?

howa wrote:
Hello,

On Apr 24, 8:06 pm, Bill Todd wrote:
howa wrote:
Assuming that's not an option, then if availability is as important as
you suggest RAID-6...
Forum: Storage & Hardrives April 24th 09, 01:06 PM Posted to comp.arch.storage
Replies: 3
Views: 647
Posted By Bill Todd
Raid suggestions?

howa wrote:
Hello,

We have just bought Dell MD1000, together with 15 SAS 15K hard disks.

This server will be connected to 6 web servers which provide a
centralized storage using NFS.
...
Forum: Storage & Hardrives April 24th 09, 02:34 AM Posted to comp.os.linux.development.system,comp.arch.storage
Replies: 32
Views: 2,194
Posted By Bill Todd
Unimpressive performance of large MD raid

kkkk wrote:

....

Some interesting questions. Perhaps you're getting slammed by people
for your configuration choices (which do not seem unreasonable given the
also-not-unreasonable goals that...
Forum: Storage & Hardrives April 8th 09, 09:18 PM Posted to comp.arch.storage
Replies: 8
Views: 968
Posted By Bill Todd
Out-of-order writing by disk drives

Anton Ertl wrote:
Bill Todd writes:
Anton Ertl wrote:
Bill Todd writes:
That disks write data out of order when write-back caching is...
Forum: Storage & Hardrives April 8th 09, 05:37 PM Posted to comp.arch.storage
Replies: 8
Views: 968
Posted By Bill Todd
Out-of-order writing by disk drives

Anton Ertl wrote:
Bill Todd writes:
That disks write data out of order when write-back caching is enabled
does not seem at all surprising, since that's one of the...
Forum: Storage & Hardrives April 8th 09, 04:19 PM Posted to comp.arch.storage
Replies: 8
Views: 968
Posted By Bill Todd
Out-of-order writing by disk drives

That disks write data out of order when write-back caching is enabled
does not seem at all surprising, since that's one of the main potential
benefits of having write-back caching enabled. I'd be...
Showing results 1 to 25 of 157

 
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