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Aug
26
comment What's the minimum latency achievable for a shared drive?
I disagree- I think this is on topic. Maybe badly worded, but what's really being asked here is how to minimize latency for file access between VMs in the same hypervisor.
Aug
24
comment Is it possible for a UNC path to a SAN be disconnected through overwhelming I/O?
UNC paths are for network drives. SAN provides SCSI LUNs. Unless you clarify a specific scenario that you are dealing with, this question should be closed.
Aug
19
comment NetApp 2520 and two vmware servers
We need to know whether you want to use FC (SCSI LUNs) or NFS for the VMWare datastores.
Aug
17
comment Best practice for 24 Disk Array
That's a rather vague assertion, Tom. A good counter example would be Netapp, which doesn't do raid 10 and hosts a large number of databases across their install base. Raid 10 is something you do when you're using internal disk, for sure, but I wouldn't go as far as to say that the "storage community as a whole" recommends it. Each vendor has their own recommendations.
Aug
14
comment Best practice for 24 Disk Array
People who are voting to close this: this is not an opinion based question, it's a best practices question. There is an answer from the vendor, and it's on-topic at serverfault.
Aug
13
comment Best practice for 24 Disk Array
I'm not recommending raid 5, Hagen. I'm recommending raid 6. And Tom, the question states that they have 24 600GB SAS disks. Not a large array of big slow disks, nor any SSD (no matter how established the technology). This question is very explicit and clear.
Aug
13
comment Best practice for 24 Disk Array
Your flag is incorrect- this is a specific question with a specific and correct answer. There's a redbook from IBM that contains the information requested. Also, your comment about raid 5 and 6 is incorrect for enterprise storage. Rebuild times on a 12 drive 600GB raid are not the multi-week rebuilds you get on 7200 4TB drives. Additionally, raid 50 doesn't exist on this storage, they use wide striped pools containing extents from multiple raid groups of raid 5, 6, or 10.
Aug
13
comment Best practice for 24 Disk Array
Rebuild times on a 600GB SAS disk are not huge. Your advice is true for local storage of 7200 RPM, not enterprise storage with a large controller write cache and small, fast spindles. Also, For VMWare 5.5, two LUNs per datastore is recommended, and wide striping should be used whenever possible to make each LUN have access to the underlying performance of all the spindles, not just a single array.
Aug
5
comment NetApp NFS Exports with all_squash
Oh, I was assuming this was clustered data ontap. Is that true? Or is this 7-mode?
Aug
4
comment NetApp NFS Exports with all_squash
I don't know the answer to this from experience, but I've started looking for one here: library.netapp.com/ecmdocs/ECMP1366835/html/index.html
Jul
24
comment SAN storage I/O issues
Unless you have admin access to the SAN and know how it's configured, this is the wrong question to ask.
Jul
16
comment NFS mount on Windows 8 non-enterprise
I didn't see that, I'll try it :)
Jul
16
comment NFS mount on Windows 8 non-enterprise
That is a little do-it-yourself... I am hoping for an answer that involves installing some software, but am not up to compiling something myself. Many people who went from windows 7 to 8 have lost the ability to use their NFS NAS, and a good answer to this question would be very helpful to a lot of people.
Jul
3
comment List shadowcopy timestamps of netapp
Not related, ErikE. That's a windows thing, and he wants to know about the NAS. He already has access (and presumably understands how to use) the windows information. He wants to find a way to write a script using the information about which snapshots are available.
Jun
30
comment When the internet is down, so is Active Directory?
In his question, he specified that the server and 3 workstations are connected to that switch.
Jun
30
comment When the internet is down, so is Active Directory?
The DCHP is handled by the router.
Jun
23
comment NetApp - Snapshot Full
Ah, DFM makes a difference :) I've only used the version they make for CDOT, not the one you're on.
Jun
23
comment NetApp - Snapshot Full
Literally "snapshot full", not "snap reserve full"?
Jun
22
comment 7-Mode snapmirror status post link change
+1 for toasters. It's by far the best way to ask and answer questions about Netapp.
Jun
22
comment NPIV Fibre Channel how to make vHBA scsi_hostX persistent after reboot and libvirt
NPIV is not common on servers. It's something you see from AIX and blade passthrough modules (as well as from some storage), but all the Linux servers I've worked with have just used their physical WWN, which logs into the fabric as soon as the HBA is enabled. That said, as long as you're not trying to boot from this, maybe putting that echo into a startup script would suffice?