Re: Disk Storage

In article <3641E3EF.1CD1@bloomberg.net>, kagel@bloomberg.net (Art S. Kagel) wrote: [cutting] > > o What storage solution are using? > We use both EMC and DG Clariion. We tend to favor Clariion because of > price and support except where absolute performance is required. We > are also testing Sun's newest high speed disk subsystems. The current range of Sun arrays are very good, but the first generation were truly awful [cutting] > EMC uses proprietary drives, Sun uses off the shelf drives and DG uses > off the shelf drives but formats them with an odd blocksize (520bytes) > so it is usually easier to get preformatted drives from them. DG > drive prices are reasonable (about 1/2 EMC and about 10% higher than > generic). In the case of Sun you can blow your warranty if you don't get them from approved ie expensive routes > > You are welcome. > Art S. Kagel > > PS - Tip of the day: Veritas will let you specify different RAID block > sizes for different zones on the drives. With today's zoned disks > having vastly different numbers of sectors per track in different zones > this is significant. You can improve throughput up to 30% by zoning > the RAID/Stripe block sizes. To do this you have to get drives from > vendors that are willing to tell you their zoning rules (Seagate flatly > refuses for example). That's well worth knowing! Paul Watson # I don't suffer from WF Software Ltd. # stress, I'm just Tel. (+44) 1436 674729 # a carrier Fax. (+44) 1436 678693 # www.wfsoftware.co.uk