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Re: Size of Sites?
1998-04-17 12:42:06
what are the published trx rates for FDDI (in Mb)? The TR, I assume, is
16Mb.
Sharon Stidd
Client/Server Administrator
Alliance Data Systems
800 Tech Center Drive
Gahanna OH 43230
614/729-4340
Fax 614/729-4499
> ----------
> From: Aristotle Pokas[SMTP:Aristotle_Pokas AT CPR DOT CA]
> Sent: Friday, April 17, 1998 10:53 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: Size of Sites?
>
> 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
>
> --- Activity Statistics
> --------------------------------------------------
> ----
>
> 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
> 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
> Xfer
> ---- ---- ----- ----- ------ --------
> -----
> ----
> 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
> 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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