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- Newsgroups: comp.arch.storage
- Path: sparky!uunet!mcsun!Germany.EU.net!ira.uka.de!smurf.sub.org!incom!orfeo!qb!vhs
- From: vhs@rhein-main.de (Volker Herminghaus-Shirai)
- Subject: Re: Info on large, slow storage wanted (jukeboxes, etc.)
- Message-ID: <1992Sep4.051635.8003@rhein-main.de>
- Sender: vhs@rhein-main.de (Volker Herminghaus-Shirai)
- Reply-To: vhs@rhein-main.de
- References: <1992Aug29.210553.8744@rhein-main.de>
- Date: Fri, 4 Sep 92 05:16:35 GMT
- Lines: 25
-
- > I need to design a retrieval system for ~15TB of data, of which ~5TB are
- > retrieved with a high frequency (25 requests/second) and an access time
- > of avg. 30 seconds (max. 120 seconds). Retrieval lacks any locality, so the
- > 5TB are real random-access.
-
- Since our feed has been sucking mud for weeks now I'm unable to follow
- any online discussion (if there is any). So far I have received several
- very helpful comments per email. I'll summarize in a few days. Here's
- answers to the most commonly-asked questions:
- 1) Cost: We know it's expensive. Budget is ~$15 million.
- 2) Access: Read-only, with few enough exceptions to handle
- them separately.
- 3) Overall system load: ~4.5 MBytes per second, sustained
- 4) File organization: Flat UNIX file system
- 5) File size (~165 KB average)
-
- I would appreciate it (if there is any online discussion about this topic)
- if somebody would be willing to email the discussion to me. But please ask
- me first, I don't want to drown in messages :-)
-
- Thanks in advance,
-
- ---
- Volker Herminghaus-Shirai (vhs@rhein-main.de)
-
-