3
votes
1answer
84 views

Are FC and SAS DAS devices standard enough?

Before I ask my questions, here is some background info that may or may not be useful: For the first time I find myself needing a DAS solution. My priority is data through-put in a single direction. ...
0
votes
1answer
346 views

Mirroring iSCSI target to slower drive, asynchronous RAID or block-level replication?

I'm planning on setting up a test iSCSI export on my NAS which will be used by a KVM virtualisation host to store all guest volumes and data. My NAS box is a self-build running CentOS. The device ...
0
votes
2answers
448 views

iSCSI Distributed RAID?

Thinking about setting-up as distributed RAID array over iSCSI. Has anyone else tried this, if so what was your experience. To be more specific I am thinking of a couple of CentOS servers each with ...
1
vote
1answer
290 views

Custom SAN with multiple servers using the same iSCSI targets

I'm trying to create my own SAN out of existing hardware. I have four identical NAS devices. Each one has four 1 TB drives that they do RAID-5 across. On each NAS I have created a 1 TB iSCSI share. ...
0
votes
1answer
521 views

Is it possible to use RAID-Z/Z2 and iSCSI on FreeNAS 8

I am trying to configure FreeNas 8 to expose an RAID-Z or RAID-Z2 volume via iSCSI. I have had limited success. If I delete the RAID-Z volume and simply expose a "physical" disk in the iSCSI setup ...
1
vote
3answers
852 views

iSCSI RAID 1 on two servers, fail scenario

Imagine I have two servers, each server has two disks in RAID 1. Now I merge the two arrays with iSCSI to one RAID 1 disk. Two questions: Can I do the merging of the 4 disks in one go? I can't image ...
5
votes
1answer
593 views

Home-grown SAN — topology ideas?

I'm interested in hand-rolling a SAN solution on Linux with the following technologies: iscsi mdadm raid lvm multipath xfs/gfs/??? teamed NICs Hardware-wise, I'm thinking of 2 x gigE (or better) ...
0
votes
1answer
610 views

Raid array overloaded with no apparent reason, iostat output not making much sense?

I am looking to an iscsi installation comprised of the raid arrays managed by an HP P400 controller. 2 pairs of drives each mirrored plus 4 drives in a raid 10 configuration, all 7200rpm sas drives. ...
1
vote
0answers
487 views

Replacing LeftHand SAN Hard Disk Outside of Warranty / Service Contract

I am working with 3 clusters of LefHand SAN iSCSI storage arrays. The modules are all older NSM 150s and NSM 160s (super micro server hardware, sata disks). The workload is low priority and all ...
11
votes
6answers
673 views

How to utilize spare workstation drive space for server storage/backup

So, given the fact that you can only get hard drives of about 160GB now for the cheapest price, I find i have a ton of extra drive space on workstations spread throughout my office. I'd like to ...
2
votes
4answers
6k views

5400 RPM vs. 7200 RPM 2.5" Drives in RAID - Any Real Difference?

Suppose you setup 8 drives in a RAID 10 configuration using 2.5" drives using 500GB capacity each (total 2TB with RAID10 config 1TB useable). The controller (assume a typical 3ware SATA controller) ...
0
votes
1answer
926 views

iSCSI Target RAID Array Recommended for MacOS X

What iSCSI Target RAID Array would your recommended for MacOS X? I would prefer one that has official MacOS X iSCSI support, but if you have ones that you have used and know that work well that could ...
1
vote
1answer
1k views

MacOS X iSCSI Initiator MPIO or LACP Support

I am trying to find a MacOS X iSCSI Initiator with MPIO or LACP Support to use on MacOS X Server 10.5. We've been looking at ATTO's, but it doesn't MPIO nor LACP.