Off topic: RAID

Yahoo Archive
1
I use an Adaptec Raid controller with seagate drives. You can build the
mirror set on the fly using the adaptec software but it is better to have
the server offline. When we upgraded to raid 5 from 1 it took about 2 hours
to change. It all depends on how fast the drives and computer are.


--
Gary Wassing
Systems Administrator
SteelCraft Industries
519-271-4750 x227

-----Original Message-----
From: Smith, Ed [mailto:esmith@...]
Sent: Friday, July 20, 2001 10:02 AM
To: Vantage@Yahoogroups. Com (E-mail)
Subject: [Vantage] Off topic: RAID


I am in the learning stages of RAID systems and configuration. Can someone
help me out on this question:

If I have a single scsi drive set up on it's own array as a RAID 0 (at the
time I was not sure what I would do with this drive), can I add an equal
drive to the array and make it a RAID 1 (mirrored set) without destroying
the data already on the original drive?

It seems to me that this is what the system would have been designed for,
but the little literature I have on RAID doesn't describe this scenario.

BTW, using adaptec hardware and software with seagate drive.

Thank you,

Ed Smith
esmith@...
Metal Processors Inc.
616-429-3151



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2
I am in the learning stages of RAID systems and configuration. Can someone
help me out on this question:

If I have a single scsi drive set up on it's own array as a RAID 0 (at the
time I was not sure what I would do with this drive), can I add an equal
drive to the array and make it a RAID 1 (mirrored set) without destroying
the data already on the original drive?

It seems to me that this is what the system would have been designed for,
but the little literature I have on RAID doesn't describe this scenario.

BTW, using adaptec hardware and software with seagate drive.

Thank you,

Ed Smith
esmith@...
Metal Processors Inc.
616-429-3151
3
Yes, you should be able to build the mirror on the fly. We have two
mirrored disks and a third "warm" spare where if one side of the mirror
fails the system will automatically build on the spare and allow the
deffective drive to be hot-swapped (seperate hardware capability). A lot
would depend on the Adaptec software and I would not have a clue how to
configure your version but mirror building (or rebuilding) on the fly has
been a pretty basic feature of RAID 1setups for many years. The "how to"
ought to be in the Adaptec software manual/help file or at their web site.

-Todd Caughey
Harvey Vogel Mfg. Co.

-----Original Message-----
From: Smith, Ed [mailto:esmith@...]
Sent: Friday, July 20, 2001 9:02 AM
To: Vantage@Yahoogroups. Com (E-mail)
Subject: [Vantage] Off topic: RAID


I am in the learning stages of RAID systems and configuration. Can someone
help me out on this question:

If I have a single scsi drive set up on it's own array as a RAID 0 (at the
time I was not sure what I would do with this drive), can I add an equal
drive to the array and make it a RAID 1 (mirrored set) without destroying
the data already on the original drive?

It seems to me that this is what the system would have been designed for,
but the little literature I have on RAID doesn't describe this scenario.

BTW, using adaptec hardware and software with seagate drive.

Thank you,

Ed Smith
esmith@...
Metal Processors Inc.
616-429-3151



Yahoo! Groups Sponsor

<http://rd.yahoo.com/M=210948.1523299.3088501.1269402/D=egroupweb/S=17050071
83:HM/A=733441/R=0/*http://altfarm.mediaplex.com/ad/ck/1177-3936-1039-2?mpt=
995637816>

<http://us.adserver.yahoo.com/l?M=210948.1523299.3088501.1269402/D=egroupmai
l/S=1705007183:HM/A=733441/rand=894853474>

Useful links for the Yahoo!Groups Vantage Board are: ( Note: You must have
already linked your email address to a yahoo id to enable access. )
(1) To access the Files Section of our Yahoo!Group for Report Builder and
Crystal Reports and other 'goodies', please goto:
http://groups.yahoo.com/group/vantage/files/.
<http://groups.yahoo.com/group/vantage/files/.>
(2) To search through old msg's goto:
http://groups.yahoo.com/group/vantage/messages
<http://groups.yahoo.com/group/vantage/messages>
(3) To view links to Vendors that provide Vantage services goto:
http://groups.yahoo.com/group/vantage/links
<http://groups.yahoo.com/group/vantage/links>

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
<http://docs.yahoo.com/info/terms/> .




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