Computer Chess Club Archives


Search

Terms

Messages

Subject: Reliability and data

Author: Vincent Diepeveen

Date: 15:36:08 02/03/05

Go up one level in this thread


On February 03, 2005 at 13:57:11, Robert Hyatt wrote:

>On February 03, 2005 at 13:37:09, Peter Skinner wrote:
>
>>On February 03, 2005 at 11:47:03, Robert Hyatt wrote:
>>
>>>Nor do you know anyone that said someone did.  That's your lack of reading
>>>comprehension, not anything else.  who exactly said someone uses "all" of them?
>>
>>I have used them all at one point, but just like you I have run out of hard
>>drive space in my beast. Now all total I use 523.71gb of tablebases when playing
>>online. I use Hiarcs and Crafty, and I believe those are the only two that
>>support 6man bases at this time.
>>
>>The start up time for each program is considerable. In fact just last night I
>>saw a position where Hiarcs thought it was up +2.35 then the 6man tbs clicked in
>>and suddenly it found a mate in 42 moves. I will find the exact game and
>>position and post it here.
>>
>>>>In fact i don't even know anyone who has them all besides you. But well, you
>>>>don't even know how to back them up seemingly :)
>>
>>I have them all. Either on my hard drives, or backed up on DVD. I do have them
>>all though. Just ask my provider who cried over the bandwidth I used :)
>>
>>I downloaded roughly 10.5GB nightly until I had them all. Depending on the ftp's
>>speed, I seen a high of downloading 38.94GB in one night.
>>
>>Peter
>
>
>For the record, crafty takes about 25 seconds to "start up" on my dual xeon,
>with nearly 600 gigs of "stuff" in the TB folder.  About 500 gigs is on 146gig
>10K U320 scsi drives, the rest is on 36gig 15K U320 scsi drives.  I have 3x146
>in raid-0 (striping for performance) and 3x36 in raid-0 as well..

Bob considering all the problems you had in the past, why not use Raid5. It is
the same READ speed like raid0, it can stripe too, but if a harddrive fails then
your entire RAID array isn't complete dead.

Raid5 is pretty safe way to do things...

Note you lose 1 disk with RAID5.

So getting for example a s-ata array of 8 cheap disks of say 300GB offers higher
reliability than raid0-scsi and is a lot cheaper than those U320 disks.

READ speed of U320 is of course higher than s-ata ever will get.

Though a 400 dollar raid card hands down delivers > 400MB there.

Note that there is also raid5 for scsi.

>I don't consider that unacceptable...





This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.