Naming convention for disks, sub-disks and understanding volumes layout for different versions of NetBackup and PureDisk appliances as presented in vxprint output

Article:TECH182732  |  Created: 2012-02-29  |  Updated: 2012-05-28  |  Article URL http://www.symantec.com/docs/TECH182732
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Article Type
Technical Solution

Product(s)

Issue



The purpose of this technote is to show different naming convention for disk, sub-disks adopted for different versions of NetBackup and PureDisk appliance and to discuss the disk volumes created for these versions.


Environment



All hardware models and versions of NetBackup and PureDisk appliances.


Cause



Different naming convention and different volume layout causing confusion for customers, partners, field engineers, consultants and the support engineers.


Solution



Details are discussed below, but in summary disk names are different between pre-2.0 versions and post-2.0 versions of NetBackup appliances, disk names are kept same in all PureDisk appliance versions, and there is a difference in the names and number of disk volumes created for pre-2.0.2 and post-2.0.2 versions.

NetBackup 5200 and 5220 appliances:

Example 1:

5200 Appliance Version is 2.0.2
=========================

# vxprint
Disk group: nbuapp

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0
dg nbuapp       nbuapp       -        -        -        -        -       -

dm disk_1       disk_1       -        70277240304 -     -        -       -

v  advol        fsgen        ENABLED  21082160 -        ACTIVE   -       -
pl advol-01     advol        ENABLED  21082160 -        ACTIVE   -       -
sd disk_1-02    advol-01     ENABLED  2097152  0        -        -       -
sd disk_1-06    advol-01     ENABLED  18985008 2097152  -        -       -

v  catvol       fsgen        ENABLED  2097152  -        ACTIVE   -       -
pl catvol-01    catvol       ENABLED  2097152  -        ACTIVE   -       -
sd disk_1-03    catvol-01    ENABLED  64       0        -        -       -
sd disk_1-07    catvol-01    ENABLED  2095120  64       -        -       -
sd disk_1-08    catvol-01    ENABLED  1968     2095184  -        -       -

v  pdvol        fsgen        ENABLED  70254060992 -     ACTIVE   -       -
pl pdvol-01     pdvol        ENABLED  70254060992 -     ACTIVE   -       -
sd disk_1-01    pdvol-01     ENABLED  56221792256 0     -        -       -
sd disk_1-04    pdvol-01     ENABLED  7728399296 56221792256 -   -       -
sd disk_1-05    pdvol-01     ENABLED  6303869440 63950191552 -   -       -

Example 2:

5200 appliance with a version prior to 2.0
==========================================

# vxprint

Disk group: nbuapp

 

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0

dg nbuapp       nbuapp       -        -        -        -        -       -

 

dm sdb          disk_1       -        9755774656 -      -        -       -

 

v  advol        fsgen        ENABLED  2097152  -        ACTIVE   -       -

pl advol-01     advol        ENABLED  2097152  -        ACTIVE   -       -

sd sdb-01       advol-01     ENABLED  2097152  0        -        -       -

 

v  pdsnapvol    fsgen        ENABLED  64       -        ACTIVE   -       -

pl pdsnapvol-01 pdsnapvol    ENABLED  64       -        ACTIVE   -       -

sd sdb-02       pdsnapvol-01 ENABLED  64       0        -        -       -

 

v  pdvol        fsgen        ENABLED  9753677440 -      ACTIVE   -       -

pl pdvol-01     pdvol        ENABLED  9753677440 -      ACTIVE   -       -

sd sdb-03       pdvol-01     ENABLED  7804619648 0      -        -       -

sd sdb-04       pdvol-01     ENABLED  1949057792 7804619648 -    -       -

Notes:
=====
As shown above, disk naming convention was different, it was sdb in pre-2,0 versions instead of disk_1, disk_2 etc in post-2.0 versions of NetBackup appliances.
 

Also note that the catvol is not in pre-2.0.2 versions, for these versions catalog is kept in the advol.

With the introduction of AdvancedDisk feature in version 2.0.2, catvol (Catalog volume) and advol (AdvancedDisk volume) are created separately.

After upgrading the same appliance (presented in Example 2 above) to version 2.0.2, vxprint output now looks as shown below, note that catvol is now a separate vol.

# vxprint

Disk group: nbuapp

 

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0

dg nbuapp       nbuapp       -        -        -        -        -       -

 

dm disk_1       disk_1       -        9755774656 -      -        -       -

 

v  advol        fsgen        ENABLED  2097152  -        ACTIVE   -       -

pl advol-01     advol        ENABLED  2097152  -        ACTIVE   -       -

sd disk_1-01    advol-01     ENABLED  2097152  0        -        -       -

 

v  catvol       fsgen        ENABLED  2097152  -        ACTIVE   -       -

pl catvol-01    catvol       ENABLED  2097152  -        ACTIVE   -       -

sd disk_1-02    catvol-01    ENABLED  2097152  0        -        -       -

 

v  pdvol        fsgen        ENABLED  9751580352 -      ACTIVE   -       -

pl pdvol-01     pdvol        ENABLED  9751580352 -      ACTIVE   -       -

sd disk_1-03    pdvol-01     ENABLED  7804619648 0      -        -       -

sd disk_1-04    pdvol-01     ENABLED  1946960704 7804619648 -    -       -

Example 3:

5220 appliance with Storage Shelf (version 2.0)
====================================

vxprint output
===========
Disk group: nbuapp

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0
dg nbuapp       nbuapp       -        -        -        -        -       -

dm disk_1       disk_1       -        9755774656 -      -        -       -
dm disk_2       disk_2       -        76171777984 -     -        -       -

v  advol        fsgen        ENABLED  9755774592 -      ACTIVE   -       -
pl advol-01     advol        ENABLED  9755774592 -      ACTIVE   -       -
sd disk_1-01    advol-01     ENABLED  1951154944 0      -        -       -
sd disk_1-03    advol-01     ENABLED  7804619648 1951154944 -    -       -

v  pdsnapvol    fsgen        ENABLED  64       -        ACTIVE   -       -
pl pdsnapvol-01 pdsnapvol    ENABLED  64       -        ACTIVE   -       -
sd disk_1-02    pdsnapvol-01 ENABLED  64       0        -        -       -

v  pdvol        fsgen        ENABLED  76171777984 -     ACTIVE   -       -
pl pdvol-01     pdvol        ENABLED  76171777984 -     ACTIVE   -       -
sd disk_2-01    pdvol-01     ENABLED  76171777984 0     -        -       -
 

Notes:

As a Storage Shelf is attached to this 5220 Base Unit, now there are two disks, disk_1 and disk_2, but note that catvol is not present in this configuration as this vol is added only from version 2.0.2.

Example 4:

5220 appliance with Storage Shelf (version 2.0.2)
======================================

# vxprint
Disk group: nbuapp

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0
dg nbuapp       nbuapp       -        -        -        -        -       -

dm disk_1       disk_1       -        9755774656 -      -        -       -
dm disk_2       disk_2       -        76171777984 -     -        -       -

v  advol        fsgen        ENABLED  1560281088 -      ACTIVE   -       -
pl advol-01     advol        ENABLED  1560281088 -      ACTIVE   -       -
sd disk_1-02    advol-01     ENABLED  1560281088 0      -        -       -

v  catvol       fsgen        ENABLED  1951154176 -      ACTIVE   -       -
pl catvol-01    catvol       ENABLED  1951154176 -      ACTIVE   -       -
sd disk_1-01    catvol-01    ENABLED  2097152  0        -        -       -
sd disk_1-03    catvol-01    ENABLED  1949057024 2097152 -       -       -

v  pdvol        fsgen        ENABLED  6243221504 -      ACTIVE   -       -
pl pdvol-01     pdvol        ENABLED  6243221504 -      ACTIVE   -       -
sd disk_1-04    pdvol-01     ENABLED  6243221504 0      -        -       -

Notes:

catvol is configured and displayed as this is an appliance of version 2.0.2.

When a Storage Shelf is configured with a NetBackup 5200 appliance running any version older than 2.0.2, and 'Expand' command is used, the size of the catalog volume increases from it's current default size of 1TB to 4.5TB. In version 2.0.2 and later, 'Expand' command is replaced with 'Add' and 'Resize' commands.

Note that the ability to reduce the size of the catalog volume is not supported in version 2.0 when the appliance has a Storage Shelf attached, and it's role is Master server appliance. This support of reducing the size of the catalog volume is included only from version 2.0.2.

PureDisk appliances:
================
> applianceversion
Appliance version is 1.4.2

# vxprint
Disk group: PDDG

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0
dg PDDG         PDDG         -        -        -        -        -       -

dm sdb          sdb          -        41863568 -        -        -       -

v  Storage      fsgen        ENABLED  41863168 -        ACTIVE   -       -
pl Storage-01   Storage      ENABLED  41863168 -        ACTIVE   -       -
sd sdb-01       Storage-01   ENABLED  41863168 0        -        -       -

> applianceversion
Appliance version is 1.4.1.1
 

 # vxprint
Disk group: PDDG

TY NAME         ASSOC        KSTATE   LENGTH   PLOFFS   STATE    TUTIL0  PUTIL0
dg PDDG         PDDG         -        -        -        -        -       -

dm sdb          sdb          -        70277306352 -     -        -       -

v  Storage      fsgen        ENABLED  70277304320 -     ACTIVE   -       -
pl Storage-01   Storage      ENABLED  70277304320 -     ACTIVE   -       -
sd sdb-01       Storage-01   ENABLED  70277304320 0     -        -       -
 

Notes:

As you see the disk names are kept same in different versions of PureDisk appliances.

 

 





Article URL http://www.symantec.com/docs/TECH182732


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