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Re: Size of Sites?
1998-04-17 10:53:55
On our FDDI network we can usually get about 6GB / Hour (on an unloaded
network) to one DLT7000 Drive on an RS/6000 R50 with 2 processors and 512
MB ram (though we never have actually seen a situation where we stressed
the load on any of our ADSM servers). We use a mixed FDDI / TR
environment which introduces a bit more network overhead for the server and
we max our network quite a bit during peak backup hours. To give you an
idea of throughput I've attached portions of our daily summary report:
Please note:
The 2 Clients on FDDI have transfer rates much higher than the others on
TR. Time statistics are in seconds. On FDDI we use no compression, on TR
we use compression. We have 1 FDDI interface and 1 TR interface. 95% of our
backups go directly to 20 GB of disk pools and then it is migrated to tape.
We use Server V2.1.0.15 with a STK2710 Library with 6 DLT 7000 Drives
dedicated to 1 SCSI channel each. There is about 1.5 TB of data behind
this ADSM server.
Hope this helps,
Aristotle Pokas
Technical Architecture
Canadian Pacific Railway
Aristotle_Pokas AT cpr DOT ca
--- ADSM Summary Report --------------------------------------------------
----
daily SERVER Statistics SAHARA
daily SERVER Statistics SAHARA
--- Activity Statistics --------------------------------------------------
----
Total-MB-Transfered: 114766.2
Total-MB-Transfered: 114766.2
Total-GB-Transfered: 112.1
Total-Time: 70784.0
Wait-Time-Idle: 3914.0
Wait-Time-Communications: 35105.0
Wait-Time-Media: 435.0
Data IdleW CommW MediaW Eff Xfer Data Xfer
---- ----- ----- ------ -------- ---------
114766.2 MB 5.5% 49.6% 0.6% 1.6 MB/s 1.7 MB/s
--- Detailed -------------------------------------------------------------
----
ARCHIVE BACKUP
ARCHIVE BACKUP
Objects-Inserted: 51.0 2885.0
MB-Inserted: 2138.0 112463.8
GB-Inserted: 2.1 109.8
Objects-Retrieved: 0.0 0.0
MB-Retrieved: 0.0 0.0
GB-Retrieved: 0.0 0.0
--- NODE Statistics ------------------------------------------------------
----
Node Data IdleW CommW MediaW Eff Xfer Data
Node Data IdleW CommW MediaW Eff Xfer Data
Xfer
---- ---- ----- ----- ------ -------- -----
----
server 114766.2 MB 5.5% 49.6% 0.6% 1.6 MB/s 1.7
server 114766.2 MB 5.5% 49.6% 0.6% 1.6 MB/s 1.7
MB/s
ADSM_ACADIAN 17.2 MB 32.8% 40.6% 0.0% 0.3 MB/s 0.4
MB/s
ADSM_BUGATTI 19.5 MB 36.2% 46.8% 0.0% 0.4 MB/s 0.6
MB/s
ADSM_CAMARO 18.7 MB 31.5% 38.4% 0.0% 0.3 MB/s 0.4
MB/s
ADSM_CAMRY 1945.7 MB 1.9% 97.3% 0.0% 0.3 MB/s 0.3
MB/s
ADSM_CELICA 41.7 MB 63.9% 31.8% 0.0% 0.1 MB/s 0.2
MB/s
ADSM_CHEVETTE 17.2 MB 36.4% 49.1% 0.0% 0.3 MB/s 0.5
MB/s
ADSM_CORVAIR 20.8 MB 35.4% 52.1% 0.0% 0.4 MB/s 0.7
MB/s
ADSM_COUGAR 207.1 MB 82.8% 15.5% 0.0% 0.1 MB/s 0.4
MB/s
ADSM_FIREBIRD 18.4 MB 33.9% 43.5% 0.0% 0.3 MB/s 0.4
MB/s
ADSM_GRANDAM 35.0 MB 69.9% 4.8% 0.0% 0.2 MB/s 0.6
MB/s
ADSM_LINCOLN 2669.8 MB 2.4% 92.6% 1.9% 0.2 MB/s 0.2
MB/s
ADSM_LUMINA 50439.4 MB 0.5% 42.1% 0.8% 2.5 MB/s 2.6
MB/s
ADSM_SAHARA 12.9 MB 50.0% 12.0% 0.0% 0.3 MB/s 0.5
MB/s
ADSM_SP1CI 1.7 MB 0.0% 90.9% 0.0% 0.2 MB/s 0.2
MB/s
ADSM_SP1DB 59301.3 MB 0.2% 32.7% 0.2% 2.0 MB/s 2.0
MB/s
chris.bayly AT UALBERTA DOT CA on 98/04/17 02:48:33 AM
Please respond to ADSM-L AT VM.MARIST DOT EDU
To: ADSM-L AT VM.MARIST DOT EDU
cc: (bcc: Aristotle Pokas/pok0003/CPR)
Subject:
antoine.Verheijen AT UAlberta DOT CA, chris.bayly AT ualberta DOT ca
Subject: Size of sites?
X-Mailer: VM 6.43 under 20.4 "Emerald" XEmacs Lucid
Message-ID: <13622.63381.223414.91884 AT panopticon.ucs.ualberta DOT ca>
Reply-To: Chris.Bayly AT ualberta DOT ca
Hi! I'm helping to maintain an ADSM site here at the University of
Alberta. In an effort to plan for the future, and just plain
curiosity, I'm interested in appox. how much data other ADSM sites
deal with in a day (amount of data backed up and restored by users),
how much data is in your tape library, how many clients have you got,
and what kind of server this is all going through... For example,
Machine: RS/6000 580 (192MB ram, ~50gigs of ssa disk)
TapeLibrary: 3494
TotalData: ~4TB
DataPerDay: (really rough guess ~10gig)
Clients: ~150 (some huge servers, many PeeCee's...)
We have some large database's coming on line, and I'm trying to see
how much day various sites handle... We some machines looking at
backing up 10's of gigs a day... I need to get a bit better handle on
how many 10's of gigs out new 4 processor F50 with ATM and FDDI can
handle. :)
Thanks in advance for any information in advance!
--
Chris Bayly
Chris Bayly
Email: Chris.Bayly AT UAlberta DOT CA | UNIX Support
Phone: (403) 492-9344 | 352 General Services Building
Fax: (403) 492-1729 | University of Alberta
Web: http://www.tec.ualberta.ca/~cb/ | Edmonton, Alberta
| Canada T6G 2S7
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