similar to: Extracting sums for individual factors in data frames

Displaying 8 results from an estimated 8 matches similar to: "Extracting sums for individual factors in data frames"

2010 Feb 16
2
Speed question: 8-disk RAIDZ2 vs 10-disk RAIDZ3
I currently am getting good speeds out of my existing system (8x 2TB in a RAIDZ2 exported over fibre channel) but there''s no such thing as too much speed, and these other two drive bays are just begging for drives in them.... If I go to 10x 2TB in a RAIDZ3, will the extra spindles increase speed, or will the extra parity writes reduce speed, or will the two factors offset and leave things
2010 Nov 06
10
Apparent SAS HBA failure-- now what?
My setup: A SuperMicro 24-drive chassis with Intel dual-processor motherboard, three LSI SAS3081E controllers, and 24 SATA 2TB hard drives, divided into three pools with each pool a single eight-disk RAID-Z2. (Boot is an SSD connected to motherboard SATA.) This morning I got a cheerful email from my monitoring script: "Zchecker has discovered a problem on bigdawg." The full output is
2010 Aug 03
1
Date problem after import
Hi, am running into an import problem: After I upgraded an Mac OS X 10.5.8 Server to Mac OS X 10.6, not all, but quite some mails show wrong dates. They are dated to the year 2020, which is obviously not possible for mail that has been sent long ago. Now 10.5 to 10.6 is a move from cyrus to dovecot and the migration scripts used by Apple are supposed to do a nice migration. I have seen this
2010 Aug 28
0
Solaris xattr support (from Mac OS X 10.6)
Hi, I wonder if anyone can confirm if they've been able to successfully transfer xattrs with rsync to a Solaris (based) system (in this case Nexenta Core 3). I managed to get rsync to build with xattr support on Nexenta by using 3.0.10dev, and running rsync --version shows that it's included. However if I try to rsync files from a Mac OS X (10.6) system to the Nexenta system (or vice
2010 Apr 26
23
SAS vs SATA: Same size, same speed, why SAS?
I''m building another 24-bay rackmount storage server, and I''m considering what drives to put in the bays. My chassis is a Supermicro SC846A, so the backplane supports SAS or SATA; my controllers are LSI3081E, again supporting SAS or SATA. Looking at drives, Seagate offers an enterprise (Constellation) 2TB 7200RPM drive in both SAS and SATA configurations; the SAS model offers
2011 Mar 01
14
Good SLOG devices?
Hi I''m running OpenSolaris 148 on a few boxes, and newer boxes are getting installed as we speak. What would you suggest for a good SLOG device? It seems some new PCI-E-based ones are hitting the market, but will those require special drivers? Cost is obviously alsoo an issue here.... Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy at karlsbakk.net
2010 Apr 27
42
Performance drop during scrub?
Hi all I have a test system with snv134 and 8x2TB drives in RAIDz2 and currently no Zil or L2ARC. I noticed the I/O speed to NFS shares on the testpool drops to something hardly usable while scrubbing the pool. How can I address this? Will adding Zil or L2ARC help? Is it possible to tune down scrub''s priority somehow? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy at
2016 Oct 05
1
[Bug 1088] New: activation.avg.com 1.8.0.0.9.6.9.1.6.4.9
https://bugzilla.netfilter.org/show_bug.cgi?id=1088 Bug ID: 1088 Summary: activation.avg.com 1.8.0.0.9.6.9.1.6.4.9 Product: bugzilla Version: other Hardware: All OS: All Status: NEW Severity: enhancement Priority: P5 Component: netfilter bugzilla Assignee: netfilter-buglog at