Veritas VxVM/VxDMP drivers ?

NTDEV
1

Couple of quick questions:

  1. In Win2K, are VxVM and VxDMP two separate drivers
    or are they merged together ?

[I remember that in UNIX they are two separate drivers, which are bundled together in same package file. In the I/O stack, VxVM driver is layered on top of VxDMP].

  1. If VxDMP is a separate driver, is it a “layer”
    driver or a “filter” driver ?

TIA.
Tom

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2

> 1. In Win2K, are VxVM and VxDMP two separate drivers

or are they merged together ?

What is VxVM? Veritas’s software RAID?
w2k’s version of it contains 2 binaries - dmload.sys and dmio.sys.

There is also dmboot.sys, though I dunno for what it is used, it is
not loaded on my machine.

Max

3

they are different drivers.

-----Original Message-----
From: Maxim S. Shatskih [mailto:xxxxx@storagecraft.com]
Sent: Wednesday, July 31, 2002 2:03 PM
To: NT Developers Interest List
Subject: [ntdev] Re: Veritas VxVM/VxDMP drivers ?

  1. In Win2K, are VxVM and VxDMP two separate drivers
    or are they merged together ?

What is VxVM? Veritas’s software RAID?
w2k’s version of it contains 2 binaries - dmload.sys and dmio.sys.

There is also dmboot.sys, though I dunno for what it is used, it is
not loaded on my machine.

Max

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4

Yes, thats the UNIX terminology for Veritas Products.

VxVM : Veritas Volume Manager
VxDMP : Veritas Dynamic Multipathing Driver

Whats the function of “dmload” and “dmio” drivers ? If
these are Volume Manager driver, then what is “Ftdisk”
meant for ?

Thanks,
Tom.

— “Maxim S. Shatskih”
wrote:
> > 1. In Win2K, are VxVM and VxDMP two separate
> drivers
> > or are they merged together ?
>
> What is VxVM? Veritas’s software RAID?
> w2k’s version of it contains 2 binaries - dmload.sys
> and dmio.sys.
>
> There is also dmboot.sys, though I dunno for what it
> is used, it is
> not loaded on my machine.
>
> Max
>
>
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@yahoo.com
> To unsubscribe send a blank email to
%%email.unsub%%

__________________________________________________
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5

Whats the name of VxDMP driver on Windows ? Is it a
filter driver or a layered driver ?

— Pashupati Kumar wrote:
> they are different drivers.
>
> -----Original Message-----
> From: Maxim S. Shatskih
> [mailto:xxxxx@storagecraft.com]
> Sent: Wednesday, July 31, 2002 2:03 PM
> To: NT Developers Interest List
> Subject: [ntdev] Re: Veritas VxVM/VxDMP drivers ?
>
>
> > 1. In Win2K, are VxVM and VxDMP two separate
> drivers
> > or are they merged together ?
>
> What is VxVM? Veritas’s software RAID?
> w2k’s version of it contains 2 binaries - dmload.sys
> and dmio.sys.
>
> There is also dmboot.sys, though I dunno for what it
> is used, it is
> not loaded on my machine.
>
> Max
>
>
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@Legato.COM
> To unsubscribe send a blank email to %%email.unsub%%
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@yahoo.com
> To unsubscribe send a blank email to
%%email.unsub%%

__________________________________________________
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6

vxdmp driver is named depending on raid array support. veritas has different
driver implementation for known supported disk arrays. Unsupported disk
arrays and JBODs are handled by a seperate driver. I am not sure about the
exact names of the drivers.
vxdmp is a filter driver, its lower filter driver to the disk class driver.
On NT it acts as filter driver for the SCSI port driver.

-----Original Message-----
From: NT Developer [mailto:xxxxx@yahoo.com]
Sent: Wednesday, July 31, 2002 4:28 PM
To: NT Developers Interest List
Subject: [ntdev] Re: Veritas VxVM/VxDMP drivers ?

Whats the name of VxDMP driver on Windows ? Is it a
filter driver or a layered driver ?

— Pashupati Kumar wrote:
> they are different drivers.
>
> -----Original Message-----
> From: Maxim S. Shatskih
> [mailto:xxxxx@storagecraft.com]
> Sent: Wednesday, July 31, 2002 2:03 PM
> To: NT Developers Interest List
> Subject: [ntdev] Re: Veritas VxVM/VxDMP drivers ?
>
>
> > 1. In Win2K, are VxVM and VxDMP two separate
> drivers
> > or are they merged together ?
>
> What is VxVM? Veritas’s software RAID?
> w2k’s version of it contains 2 binaries - dmload.sys
> and dmio.sys.
>
> There is also dmboot.sys, though I dunno for what it
> is used, it is
> not loaded on my machine.
>
> Max
>
>
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@Legato.COM
> To unsubscribe send a blank email to %%email.unsub%%
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@yahoo.com
> To unsubscribe send a blank email to
%%email.unsub%%

__________________________________________________
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Yahoo! Health - Feel better, live better
http://health.yahoo.com

—
You are currently subscribed to ntdev as: xxxxx@Legato.COM
To unsubscribe send a blank email to %%email.unsub%%

7

> these are Volume Manager driver, then what is “Ftdisk”

meant for ?

For legacy NT4-style software RAIDs, and as a dummy volume manager for
simple partitions.

Max