Hi Bill,
I got an idea on how to configure it.Thank you so much for so detailed information. It definitely helps me a lot!
--- In commvault < at > yahoogroups.com ([email]commvault%40yahoogroups.com[/email]), "Bill Willis" <bill.willis < at > ...> wrote:
1. On the Window server level, what do I have to do to have the server
to recognize the tape library?
I can use "rescan disk" in Disk Management GUI to recognize the lun.
What about the similar tool I can use to recognize the tape library?
This comes with knowledge about the tape library. On my old IBM 3494,
I had to have a driver for the library controller on my MA. So you had
a driver for the drives and a controller for the library (It installed
as the IBM Automated Tape Library Service). But then with the new IBM
3584, which I assume is more like yours, the tape drives themselves are
the controller, so if you look at the device list on my Windows MA, you
don't even see the library, only the drives. The requests to the drives
move the library gripper automatically. This is done through a web
console that my tape library has. You can tell it which of your tape
drives are "control paths."
Again, this is from the IBM hardware standpoint. I haven't really
worked with other models of library.
2. Only 1 MA can write tape library/drive at a particular moment, and
that is fine, but this library/drive can be shared and consequently
read/write by 2 or more MA's without manual intevention. Right?
Right. I have 5 MA's and 4 Tape drives and CV can have 1 MA
controlling each drive or sometimes 1 MA controls all of the drives,
depending on where the Aux Copy is coming from. An aux copy job will
switch MA's constantly. This is all done automatically, I don't have to
do any kind of library work other than putting in scratch tapes (and I
use Vault Tracker for my tape ejects).
3. We are using MSL8096, it should have the same function as IBM tape,
although I am going to further confirm that. But, with IBM tape, how did
you turn on "nonexclusive (share) mode". Are there anything you need to
do in CommVault to make it as a shared, or only on the server OS level?
With the nonexclusive mode, when you download the drivers (for the tape
drives) from IBM, they came in a .zip file that had a bunch of files in
there. You had 2 .exe files that would do the driver install. One was
called install_nonexclusive.exe and one that was called
install_exclusive.exe. If I were to run the install_exclusive.exe on 1
of my media agents, it wouldn't know how to share a drive. It would
claim them all (or it would freak out if it saw the drives in use by
another MA). I ran the install_nonexclusive.exe on all of my MA's.
The drives show up in the device manager on different SCSI ports
compared to the other Media Agents. As far as making it shared in CV,
when I set up my drives (on the Tape Library's web console) as Control
Paths, I made 2 of the 4 drives control paths. Since I have 5 Media
Agents, that showed up in the CV Library and Drive Configuration (after
I did Exhaustive Detection) as 10 library controllers. Then each Drive
slot has 5 drives in it (the same tape drive, but controlled by 5 media
agents).
4. The screenshot you sent, where in CommVault I can get this screen?
and how do I distinguish which one of drives is being used by which MA?
I understand the list of 5 items actually represent one single drive.
That is a screenshot of the Commvault Library and Drive Configuration
screen on the Libraries tab. I expanded my library, but I was only
showing 1 drive to illustrate shared drive. I didn't show everything
because I didn't know if my NDMP configurations on 2 of the drives would
confuse you.
Here is the full shot. You see 2 controllers for each of my media
agents (ending in 01, 03, 06, 07, 0
. One for each drive control path
(again, your library may not do this. If you install a tape library
driver of some kind, you'll see 1 controller per MA that you install it
on). You see each of my 4 drives (drives 1 and 3 have a special NDMP
connection, you can ignore that. That's for dumping NAS data to tape
through the Commvault NAS iDataAgent). In my case, the sharing happened
automatically because of the drivers involved. I didn't have to do
anything special. It detected that way. On my old IBM 3494, I had to
drag and drop tape drives into their "slots" so that all of the Drive
#1's were in the proper place, etc.
"vkky2k" <vkky2k < at > ...> 4/12/2012 8:29 AM >>>
Hi Bill,
I have a few follow-up questions if you could be patient with me:
1. On the Window server level, what do I have to do to have the server
to recognize the tape library?
I can use "rescan disk" in Disk Management GUI to recognize the lun.
What about the similar tool I can use to recognize the tape library?
2. Only 1 MA can write tape library/drive at a particular moment, and
that is fine, but this library/drive can be shared and consequently
read/write by 2 or more MA's without manual intevention. Right?
3. We are using MSL8096, it should have the same function as IBM tape,
although I am going to further confirm that. But, with IBM tape, how did
you turn on "nonexclusive (share) mode". Are there anything you need to
do in CommVault to make it as a shared, or only on the server OS level?
4. The screenshot you sent, where in CommVault I can get this screen?
and how do I distinguish which one of drives is being used by which MA?
I understand the list of 5 items actually represent one single drive.
These are quite a lot of questions. I thank you for your help.
--- In commvault < at > yahoogroups.com ([email]commvault%40yahoogroups.com[/email]) ( mailto:commvault%40yahoogroups.com
), "Bill Willis" <bill.willis < at > > wrote:
You can set it up to have the 2 MA's going to the same library, and
even
able to use the same drives, but the drives get used 1 MA at a time.
You don't have 2 MA's writing to the same tape/drive at the same
time.
Here's a screenshot of my IBM library. This is just one of the
drives
(the 4th one) shared among my 5 media agents. The drive is zoned to
all
of them. When you do the drive detection in the Library and Drive
configuration, choose all of your MA's it should find multiple
entries
for each drive.
In my case, the IBM tape drive drivers on each of my MA's have 2
installation modes. One is called exclusive and one is called
nonexclusive (nonexclusive allows sharing). I don't know if your
drive
hardware is similar in that regard. I've only really used IBM tape
drives for the last 12 years.
Once you have them shared, make sure you create data paths for each
MA
to each drive in your storage policies.
"vkky2k" <vkky2k < at > > 4/11/2012 1:52 PM >>>
We are going to have two media agent servers, and one tape library
(HP
MSL8096) with 4 drives. All devices are going to be SAN attached.
How do I configure the tape library into CommVault, and it can back
up
data into the library at the same time via two different MA servers?
If
I have to set it up as a shared library, how do I achieve that?
Thank you for your input in advance.
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