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It depends on how much drive space you have to store your BU's. My thought
is 1-2 weeks back up may be enough ( but you must make that decision). If
you do one complete BU with 4or 5 incrementals then that space times say
four would cover perhaps close to one month. If you get a 60% compression
BU then one full BU would be about 8 tenths of one GB. If you had a 16 GB
spare space on two hard drives then you could retain 20 full BUs. I suggest
alternating your hard drives in making BUs. I purchased a hard drive
receiver to mount in my computer which comes with an envelope container in
which you place a hard drive. The envelope container box slides in from the
front of the computer and makes connection. You do not need to remove your
computer case and the hard drive is enclosed completely within this case.
Each time you change the hard drive my system is not powered up. On start
up you are required to hit the delete key to enter the BIOS settings and
then let your computer recognize the different hard drive parameters. If
both drives are identically this may not be necessary.
The question is how long a time will expire before you find data
contamination or missing data. This is the minimum period that one should
exceed in keeping BUs. If you have a BU made prior to the contamination or
erased data date you may use the BU data to recover. For example if you
discover bad data that also is included on 17 BUs and the 18th BU is good
then the problem occurred during the period between the 17 and 18 BU.
-----Original Message-----
From: Christian Baude [SMTP:BAUDECB@xxxxxxxxxxxxx]
Sent: Wednesday, June 16, 1999 9:45 PM
To: metastock@xxxxxxxxxxxxx
Subject: Re: Hard Disk Backup
On Wed, 16 Jun 1999 23:32:41 -0500, you wrote:
>I want to thank everyone for the thought provoking discussion on backups.
I have two computers, two phone lines and to different ISP's
>that I'm on during the trading day. Both computers are networked with
eithernet cards and coax cable and use Win 98 networking. It
>takes me 8-10 hours to do a complete backup of both systems to tape
(Colorado T3000).
>
>After reading the discussions, I backup my main computer (K6-300) to my
backup computer's (K6-200) E-drive using MS Backup. I did not
>know you could use it to backup to disk. It backed up 1.3GB of data in
27 mins over the network. I'm impressed. I backed up the
>K6-200 to the K6-300 in 30 mins. What a trip. My hat's off to you all
for the idea.
I don't know, but my incremental backups take less than 5 minutes,
tops. I only back up last changed files....
However, once a month I do a total backup, and that takes a loooong
time.
Using Valitek 500 meg 1/4" tapes via SCSI port.
Do you actually back up the WHOLE drive each day?
-= Chris ? =-
Using MetaStock/FastTrack/FastRUBE/FastTools/EZPnF/TC2000/PSM
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