Serial ATA (SATA or Serial Advanced Technology Attachment) is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. Serial ATA was designed to replace the older ATA (AT Attachment) standard (also known as EIDE), offering many advantages over the older parallel ATA (PATA) interface.
Questions tagged [sata]
400 questions
163
votes
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Are SSD drives as reliable as mechanical drives (2013)?
SSD drives have been around for several years now. But the issue of reliability still comes up.
I guess this is a follow up from this question posted 4 years ago, and last updated in 2011. It's now 2013, has much changed? I guess I'm looking for…
hookenz
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How can a single disk in a hardware SATA RAID-10 array bring the entire array to a screeching halt?
Prelude:
I'm a code-monkey that's increasingly taken on SysAdmin duties for my small company. My code is our product, and increasingly we provide the same app as SaaS.
About 18 months ago I moved our servers from a premium hosting centric vendor to…
Stu Thompson
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55
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How do I make Linux recognize a new SATA /dev/sda drive I hot swapped in without rebooting?
Hot swapping out a failed SATA /dev/sda drive worked fine, but when I went to swap in a new drive, it wasn't recognized:
[root@fs-2 ~]# tail -18 /var/log/messages
May 5 16:54:35 fs-2 kernel: ata1: exception Emask 0x10 SAct 0x0 SErr 0x50000 action…
Philip Durbin
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47
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3 answers
What are the merits of SAS vs SATA drives?
What are the merits of buying SAS drives over SATA drives, or vice versa?
username
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In which order do I plug the SATA power and data cables for hotplug?
I’ve found diverging instructions on the ’net about this.
To recap: SATA with the 4-pin Molex (white) power plug is not hot-pluggable, but either the wide connector or the separate (15-pin power and 7-pin data) connectors are.
However, in which…
mirabilos
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ZFS best practices with hardware RAID
If one happens to have some server-grade hardware at ones disposal, is it ever advisable to run ZFS on top of a hardware-based RAID1 or some such? Should one turn off the hardware-based RAID, and run ZFS on a mirror or a raidz zpool instead?
With…
cnst
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2 answers
How exactly does a SAS SFF-8087 breakout cable work? + RAID/connection questions
Please let me know if my question does not makes any sense as I am not sure if I am interpreting it correctly from my thoughts due to my lack of technical knowledge on this.
If I am using a motherboard which has a connection for a SFF-8087 to 4x…
Damainman
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How to unlock an SSD disk with hdparm?
I have an SSD disk with password protection, but the password was lost long time ago... so I tried to erase the ATA security with the hdparm command.
With "hdparm -I", the disk information looks interesting as below:
root@ubuntu:~# hdparm -I…
user3016997
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What kind of SATA connector is this?
My Supermicro motherboard has a "vertical S-SATA connector". The manual simply says "A vertical S-SATA connector, offers four S-SATA 3.0 connections (S-SATA 0-3)". I took a picture of it and it looks like it has 18 pins. I've had no luck finding…
Pete
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3 answers
Performance Difference SAS vs. SATA?
Can not find that anywhere it seems.
What is the expected performance difference in a storage backend scenario that is heavily parallellized in access (like a SAN, Virtualization host storage etc.) between SAS and SATA, all other things being…
TomTom
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SAS vs Near-line SAS vs SATA
I'm unsure about the differences in these storage interfaces. My Dell servers all have SAS RAID controllers in them and they seem to be cross-compatible to an extent.
The Ultra-320 SCSI RAID controllers in my old servers were simple enough: One type…
Dai
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3 answers
Deciphering continuing mpt2sas syslog messages
Summary
I have been getting these cryptic messages in syslog since I installed some new hardware and I can't figure out what the problem is, if it's serious, or what to do about it.
They're from the new SATA HBA and they follow a pattern. I will get…
Chris Smith
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Anyone seen a meaningful SAS vs SATA comparison/benchmark?
I hear lots about SATA being slower than SAS but I've only found 1 decent benchmark.
http://blog.whitesites.com/SAS-RAID-0-VS-SCSI-RAID-0-VS-SATA-Benchmarks__633689244191943184_blog.htm
In this, SAS comes out on top until you read that the SAS…
boatcoder
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3 answers
SAS vs. Nearline/MDL SAS - What is the difference?
As subject I guess, looking at SAN's and most vendors offer 10k or 15k "proper" SAS drives, many also offer 7.2k MDL/Nearline SAS drives.
Does anyone have an authoritative explanation of the difference please?
flooble
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SATA Disks that handle write caching properly?
It's pretty common to see advice to disable the write cache on individual disks used for databases because otherwise some disks will acknowledge writes that haven't yet made it to the disk surface.
This implies that some disks don't acknowledge…
eas
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