>010Date: 23-Jan-98 14:40:56 -0600
>From: MWILSON6 @ SMTP (Mike Wilson) {mwilson6 AT TUELECTRIC DOT COM}
>To: ADSM-L @ SMTP {ADSM-L AT VM.MARIST DOT EDU}
>001Subject: Re: ADSM V3 on NT
>
>We have implemented ADSM Version 3 on NT. We do not have anywhere near 1000
>clients, but the clients we do have are fairly large file servers with
>approximately 1 terrabyte total  disk space. The nightly change rate is
>around 40gb and sometimes hits 80 gb per night. On a typical night, backups
>start around  6pm and complete by 3am. We have moved some of the clients to
>a dedicated 100 megabit Ethernet network, but most of the data is currently
>being moved across 16 megabit Token Ring. We tried ADSM/NT 2.1 on the same
>hardware, but it could not get any where near this throughput, when we went
>to V3 we saw a 300% performance improvement. We also had taken  the sever
>disk out of its raid 5 configuration and saw a 33% improvement (this was
>done while under V2 before we went to V3). NT and the ADSM database run on
>raid 1 mirrored disk and the storage pools are native non-fault-tolerent
>disk. Our storage pools  are 52gb. All other functions like expiration,
>migration and reclamation are running on a timely basis. At last count
>these clients contained over 2.5 million files, but most of the nightly
>changed data is from large database files.
>
>Server hardware:
>IBM 704
>2 200mhz Pentium Pro
>256 meg memory
>2 4.5gb raid1 hard disk (operating system)
>2 9gb raid1 hard disk (db & recovery log)
>6 9gb unprotected disk (stg pools)
>
>STK 9714
>100 slots
>4 DLT7000 tape drives
>
>
>
>
>
>BOIREER AT EUROMSX.GEMSE DOT FR on 01/23/98 11:39:57 AM
>
>Please respond to ADSM-L AT VM.MARIST DOT EDU
>
>To:   ADSM-L AT VM.MARIST DOT EDU
>cc:    (bcc: Mike Wilson/Texas Utilities)
>Subject:  ADSM V3 on NT
>
>
>
>
>Hello,
>Has anybody already implemented ADSM V3 NT with more than 1000 clients.
>If so, what type of server are you using?
>We are planning to implement this solution with 1800 PC client on a HP
>LxPro Bi-PentiumPro 200 with 256MB of RAM and 50GB of Disk (Raid 5)
>connected to a StorageTek 9714 (100xDLT7000) library. We are wondering
>if NT can handle this.
>Thanks.
>
>> g          GE Medical Systems
>> __________________________________
>> Eric Boireau                                                GITS
>> Unix / NT  System Engineer
>>
>> GE Medical Systems S.A
>> 283, rue de la Mini?re
>> 78533 BUC Cedex France
>> T?l: (33) 01 30 70 39 51,  DC: 8*644 3951
>> Fax: (33) 01 30 70 39 20, DC: 8*644 3920
>> mailto:boireer AT euromsx.gemse DOT fr
>>
>> Salutations / Best Regards
>>
>>
>>

Is a mirrored configuration better / faster  than a raid 5 environment?