ADSM-L

Re: [ADSM-L] 3592 drives in 3584 library

2012-01-28 09:10:53
Subject: Re: [ADSM-L] 3592 drives in 3584 library
From: Neil Schofield <neil.schofield AT YORKSHIREWATER.CO DOT UK>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Sat, 28 Jan 2012 14:07:26 +0000
David, Allen

I believe the WWN reported by Q DRIVE F=D is the node WWN, not the port WWN
so I would expect it to remain constant.

I too have often wondered why the WWN is not returned by a SELECT on the
DRIVES table since it must be in the database. Assuming you've got
SANDISCOVERY enabled, it is possible to obtain the information from a join
on the DRIVES and the SAN table but, if my system is anything to go by,
performance might be dire. I'm guessing this is because any SELECT on the
SAN table initiates a SAN discovery and this can take a long time to return
if you've got a lot of external disks / tape drives (I've got 188 rows in
my SAN table!). Coupled with this, the performance of joins (at least prior
to v6) was never that hot.

Anyway, try something like this:

tsm: TSMLM1>select dv.drive_name,san.node_wwn,san.port_wwn from drives dv,
san where dv.drive_serial=san.serial
ANR2963W This SQL query may produce a very large result table, or may
require a significant amount of time to compute..

Do you wish to proceed? (Yes (Y)/No (N)) y

DRIVE_NAME             NODE_WWN             PORT_WWN
------------------     ----------------     ----------------
TDC_F01R01             500507630F15B101     500507630F55B101
TDC_F01R01             500507630F15B101     500507630F95B101
TDC_F01R02             500507630F15B102     500507630F55B102
TDC_F01R02             500507630F15B102     500507630F95B102
TDC_F01R03             500507630F15B103     500507630F95B103
TDC_F01R03             500507630F15B103     500507630F55B103
TDC_F01R04             500507630F15B104     500507630F55B104
TDC_F01R04             500507630F15B104     500507630F95B104
TDC_F01R05             500507630F15B105     500507630F55B105
TDC_F01R05             500507630F15B105     500507630F95B105
TDC_F01R06             500507630F15B106     500507630F55B106
TDC_F01R06             500507630F15B106     500507630F95B106
TDC_F01R07             500507630F15B107     500507630F95B107
TDC_F01R07             500507630F15B107     500507630F55B107
TDC_F01R08             500507630F15B108     500507630F55B108
TDC_F01R08             500507630F15B108     500507630F95B108
TDC_F01R09             500507630F15B109     500507630F55B109
TDC_F01R09             500507630F15B109     500507630F95B109
TDC_F01R10             500507630F15B10A     500507630F55B10A
TDC_F01R10             500507630F15B10A     500507630F95B10A
TDC_F01R11             500507630F15B10B     500507630F95B10B
TDC_F01R11             500507630F15B10B     500507630F55B10B
TDC_F08R01             500507630F15B171     500507630F55B171
TDC_F08R01             500507630F15B171     500507630F95B171
TDC_F08R02             500507630F15B172     500507630F95B172
TDC_F08R02             500507630F15B172     500507630F55B172
TDC_F08R03             500507630F15B173     500507630F55B173
TDC_F08R03             500507630F15B173     500507630F95B173
TDC_F08R04             500507630F15B174     500507630F55B174
TDC_F08R04             500507630F15B174     500507630F95B174
TDC_F08R05             500507630F15B175     500507630F55B175
TDC_F08R05             500507630F15B175     500507630F95B175
TDC_F08R06             500507630F15B176     500507630F95B176
TDC_F08R06             500507630F15B176     500507630F55B176
TDC_F08R07             500507630F15B177     500507630F55B177
TDC_F08R07             500507630F15B177     500507630F95B177
TDC_F08R08             500507630F15B178     500507630F55B178
TDC_F08R08             500507630F15B178     500507630F95B178
TDC_F08R09             500507630F15B179     500507630F55B179
TDC_F08R09             500507630F15B179     500507630F95B179
TDC_F08R10             500507630F15B17A     500507630F95B17A
TDC_F08R10             500507630F15B17A     500507630F55B17A
TDC_F08R11             500507630F15B17B     500507630F55B17B
TDC_F08R11             500507630F15B17B     500507630F95B17B

Regards
Neil Schofield
Technical Leader
DCS Engineering
Yorkshire Water Service Ltd.


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