similar to: SSD for Centos SWAP /tmp & /var/ partition

I''ve got two recent examples of SSDs. Their pristine state from the manufacturer shows: Device Model: OCZ-VERTEX3 # hexdump -C /dev/sdd 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 1bf2976000 Device Model: OCZ VERTEX PLUS (OCZ VERTEX 2E) # hexdump -C /dev/sdd 00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| *

Hi, I''ve ordered a new server with: - 4x600GB Toshiba 10K SAS2 Disks - 2x100GB OCZ DENEVA 2R SYNC eMLC SATA (no expander so I hope no SAS/ SATA problems). Specs: http://www.oczenterprise.com/ssd-products/deneva-2-r-sata-6g-2.5-emlc.html I want to use the 2 OCZ SSDs as mirrored intent log devices, but as the intent log needs quite a small amount of the disks (10GB?), I was wondering

For using SSDs: Are there any format/mount parameters that should be set for using btrfs on SSDs (other than the "ssd" mount option)? General questions: How long is the ''delay'' for the delayed alloc? Are file allocations aligned to 4kiB boundaries, or larger? What byte value is used to pad unused space? (Aside: For some, the erased state reads all 0x00, and for

Hi, I don''t know if it''s already been discussed here, but while thinking about using the OCZ Vertex 2 Pro SSD (which according to spec page has supercaps built in) as a shared slog and L2ARC device it stroke me that this might not be a such a good idea. Because this SSD is MLC based, write cycles are an issue here, though I can''t find any number in their spec. Why do I

Hi all, is anyone on this list who dares/dared to store his index files on a MLC-SSD? Regards, Patrick

Hi all, just after sending a message to sunmanagers I realized that my question should rather have gone here. So sunmanagers please excus ethe double post: I have inherited a X4140 (8 SAS slots) and have just setup the system with Solaris 10 09. I first setup the system on a mirrored pool over the first two disks pool: rpool state: ONLINE scrub: none requested config: NAME

Now the test for the Vertex 2 Pro. This was fun. For more explanation please see the thread "Crucial RealSSD C300 and cache flush?" This time I made sure the device is attached via 3GBit SATA. This is also only a short test. I''ll retest after some weeks of usage. cache enabled, 32 buffers, 64k blocks linear write, random data: 96 MB/s linear read, random data: 206 MB/s linear

Same as its brothers/sisters, it's optimized for 4 KB blocks. /* * OCZ Vertex 4 SSDs * 4k optimized */ { T_DIRECT, SIP_MEDIA_FIXED, "ATA", "OCZ_VERTEX4*", "*"}, /*quirks/DA_Q_4K Borja.

I have a 50 gig OCZ Vertex LE drive that needs a firmware update. When I run the Windows only flash program in wine it doesnt see the SATA ssd drive it needs to flash. I have booted off another hard disk. I need administrator privileges to see the drive so I config'd wine for win98. I also tried to manually add the drive in wine config by adding the /media/xxxx path and also manually

I''ve just finished installing onto an OCZ Agilent v2 SSD with btrfs as filesystem. However to my surprise I''ve hit an ENOSPC condition one one of the partitions within less than a day of uptime, while the filesystem on that partition only reported 50% to be in use, which is far from the 75% limit people mention on the ML. Note that this occurs using a vanilla 2.6.32-rc5 kernel

Hi everyone, I added a page under the HowTos for Encryption, and then added a guide for encrypting /tmp /swap and /home using cryptsetup and LUKS keys on LVM, when you already have partitions setup. http://wiki.centos.org/HowTos/EncryptTmpSwapHome Regards, Max

I have a couple development servers running centos 6.3 64bit that have LSI 9211-8i SAS2 controllers connected to a SAS2 backplane. these work fine with SATA hard disks (populated with a bunch of 3TB SATA drives)... I'm trying to install a OCZ Vertex3 SSD on each of the two servers to do some ssd caching tests... system sees the drive, so I do the following... # parted -a min

nice time, Xen community. my DomU has very slow Disk performance, despite the usage of SSD''s. Maybe somebody can give some good tips to accelerate, or point out my mistakes. DomU CristalDiskMark 3.0.1 test(roundet): seq (R/W) :71 / 86 MB/s 512k(R/W) :76 / 80 MB/s 4K(R/W) :4 / 3 MB/s 4K QD32(R/W):4 / 4 MB/s The same guest running in KVM-Qemu (standard installed on Ubuntu

I recently got a new SSD (ocz vertex LE 50gb) It seems to work really well as a ZIL performance wise. My question is, how safe is it? I know it doesn''t have a supercap so lets'' say dataloss occurs....is it just dataloss or is it pool loss? also, does the fact that i have a UPS matter? the numbers i''m seeing are really nice....these are some nfs tar times before

Hi folks, an Asterisk (www.asterisk.org) box will be built with the following specs and I wanted to know if CENTOS has a built process/config/parameter/special distro to target the AMD Opteron Dual Core plataform: 2 amd opteron 265 dual core 1.8 Ghz 2mb l2 cache 2x1024 ocz c2-6400 dual channel gold GX XTC 2 Seagate 16mb cache 300 GB barracuda 7200 drives another 2 Seagate 500 GB 16mb cache

Hi all, I currently have a OCZ Vertex 4 SSD as a ZIL device and am well aware of their exaggerated claims of sustained performance. I was thinking about getting a DRAM based ZIL accelerator such as Christopher George''s DDRDive, one of the STEC products, etc. Of course the key question i''m trying to answer is: is the price premium worth it? --- What is the (average/min/max)

Hi, Is there someone successfully running memcached-1.4.1 on Centos 4 with centosplus php? I'm trying to use memcached under Centos 4. I can set values fine but 'get' returns: [root at rakosnicek eshop]# php d.php PHP Warning: Memcached::get(): bad type specifier while parsing parameters in /var/www/d.php on line 6 NULL string(7) "SUCCESS" array(1) {

I have a 24 x 1TB system being used as an NFS file server. Seagate SAS disks connected via an LSI 9211-8i SAS controller, disk layout 2 x 11 disk RAIDZ2 + 2 spares. I am using 2 x DDR Drive X1s as the ZIL. When we write anything to it, the writes are always very bursty like this: ool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool

The standard controller that has been recommended in the past is the AOC-SAT2-MV8 - an 8 port with a marvel chipset. There have been several mentions of LSI based controllers on the mailing lists and I''m wondering about them. One obvious difference is that the Marvel contoller is PCI-X and the LSI controllers are PCI-E. Supermicro have several LSI controllers. AOC-USASLP-L8i with the

I'm not sure what gave me this idea, but I decided to comment out the swap partition in /etc/fstab and reboot my laptop. I did not run swapoff directly at any time. I'm running more things now than I would ever dream of to hammer my 500MB of memory, but I still notice NO slowdown. This is the best desktop experience I've ever had for any OS on any hardware! Here's the first 12