Not all SAN RAID controllers support the idea of logical disks, whereyou can make a bunch of drives into a storage pool and then carve thestorage pool up into software-managed bits; some prefer the simplerand more straightforward approach of just exporting the pool itselfand staying out of the space management business.

Unfortunately, we need logical drives. The problem (and the reason) isthat logical drives are the only way to sensibly dynamically split thespace on a RAID controller between multiple fileservers. This is becauselogical

For those who haven't encountered it yet, RAID-6 is RAID-5 with twoparity blocks per stripe instead of one; it thus has a two disk overheadfor parity, compared to RAID-5's one disk.

We're interested in RAID-6 because it is more or less a better versionof RAID-5 plus a hot spare. With RAID-5, if you lose a drive the diskarray is non-redundant for the time it takes to rebuild onto your hot

This week, we:

• got 10,553 messages from 239 different IP addresses.
• handled 19,451 sessions from 1,629 different IP addresses.
• received 430,428 connections from at least 69,677 different IPaddresses.
• hit a highwater of 9 connections being checked at once.

The connection volume is way up compared to last week ; however, I believe that it is mostly becauseof one machine, 213.