Hi there
I've bought for my Company an new Server with 96 GB memory and two XEON's. Also the Box has got two 240 GB SSD's for the Operating System (FreeBSD 9.1) and sixteen 3000 GB drives to use as storage. Now the storage seems to be bad configured because I use more then 9 drives for an VDEV. And I didn't though about a ZIL before.It's currently really very slow. I have understood painful what I did wrong.
So tomorrow at work I would backup the data and destroy the current zpool to build a better one. Now I've to think about a ZIL. My next problem is that it's impossible to put more drives or SSD's in this case because it's full. It's only possible to put two mSATA drives on two PCIe slots inside. Currently I keep my eyes on two models of mSATA drives for buying. One is a
ADATA SX300 mSATA SSD 64 GB
The other one is a
Intel 311series mSATA SSD 20 GB
I am a absolute novice about them. Which model should I buy? The MLC or the SLC? Tell me more if you think my idea would be absolute idiotic please.
cheers Darko
I've bought for my Company an new Server with 96 GB memory and two XEON's. Also the Box has got two 240 GB SSD's for the Operating System (FreeBSD 9.1) and sixteen 3000 GB drives to use as storage. Now the storage seems to be bad configured because I use more then 9 drives for an VDEV. And I didn't though about a ZIL before.It's currently really very slow. I have understood painful what I did wrong.
So tomorrow at work I would backup the data and destroy the current zpool to build a better one. Now I've to think about a ZIL. My next problem is that it's impossible to put more drives or SSD's in this case because it's full. It's only possible to put two mSATA drives on two PCIe slots inside. Currently I keep my eyes on two models of mSATA drives for buying. One is a
ADATA SX300 mSATA SSD 64 GB
Code:
readspeed 550 MB/s
writespeed 485 MB/s
Random Write (4KB) 65000 IOPS
transmissionspeed 6 Gbit/s
S.M.A.R.T support yes
TRIM support yes
ECC yes
Native Command Queuing (NCQ) yes
controller LSI SandForce SF-2281
type mlc
The other one is a
Intel 311series mSATA SSD 20 GB
Code:
readspeed 200 MB/s
writespeed 105 MB/s
Random Write (4KB) 3300 IOPS
Random read (4KB) 37000 IOPS
type SLC
I am a absolute novice about them. Which model should I buy? The MLC or the SLC? Tell me more if you think my idea would be absolute idiotic please.
cheers Darko